Cited by 26Second Language Acquisition and LearningEFL/ESL Teaching and LearningLanguage Development and Disorders

Effects of Availability, Contingency, and Formulaicity on the Accuracy of English Grammatical Morphemes in Second Language Writing

Open access
Murakami, Akira, Ellis, Nick C.·2022·Language Learning

Abstract

We investigated whether the accuracy of grammatical morphemes in second language (L2) learners’ writing is associated with usage‐based distributional factors. Specifically, we examined whether the accuracy of L2 English inflectional morphemes is associated with the availability (i.e., token frequency) and contingency (i.e., token frequency relative to other forms with the same lemma) of the inflected word form as well as the formulaicity of the context in which it occurs (i.e., predictability of the form given the surrounding words). Data drawn from a large‐scale learner corpus indicated that contingency is a robust predictor of morpheme accuracy, thereby supporting the usage‐based view that language learners are sensitive to distributional properties in their input. Furthermore, the relationship of contingency with accuracy does not necessarily lessen when learners’ proficiency rises. Contrary to previous research investigating online processing, we did not identify in our study availability and formulaicity as predictors of accuracy of morpheme production in writing.

AI snapshot

Written from the paper’s full text.

TL;DR

This study tested whether accuracy of English inflectional morphemes in L2 writing is associated with usage-based distributional factors: availability, contingency, and formulaicity. In a large learner corpus, contingency/reliability was a robust positive predictor of morpheme accuracy, whereas availability and formulaicity were not consistently predictive.

Key findings

  • Reliability (contingency between inflected form and lemma) was consistently positively associated with accuracy for all four target morphemes: past tense -ed, progressive -ing, third person -s, and plural -s. A one-standard-deviation increase in reliability was associated with an accuracy increase of 0.5% for progressive -ing to 5.5% for third person -s.
  • Availability (token frequency) did not show reliable effects overall: the 95% credible interval for frequency excluded 0 only for progressive -ing. For third person -s, frequency was positively associated with accuracy from Level 8 Unit 7 (CEFR B1) or higher.
  • Formulaicity (P) was not strongly associated with accuracy, except for past tense -ed, where it was negatively correlated with accuracy.
  • L1 type showed clear evidence only for plural -s, where the PRESENT group outperformed the ABSENT group; proficiency and writing number were generally positively associated with accuracy, with writing number’s credible intervals excluding 0 only for past tense -ed and progressive -ing.

Methods

  • Data came from the error-annotated portion of the EF-Cambridge Open Language Database (EFCAMDAT), a large-scale longitudinal learner corpus of L2 English writing. The study targeted four morphemes: past tense -ed, progressive -ing, third person -s, and plural -s. Table 1 reports, for example, 30,955 learners and 151,979 obligatory contexts for past tense -ed; 39,744 learners and 123,869 contexts for progressive -ing; 39,961 learners and 113,298 contexts for third person -s; and 2,633 learners and 136,601 contexts for plural -s.
  • Availability was operationalized as surface-form frequency in COCA (March 2020); contingency as reliability (surface-form frequency divided by lemma frequency within the same part of speech); formulaicity as P, calculated over trigrams to 5-grams around the target inflected form in corrected writing.
  • Accuracy was modeled with Bayesian mixed-effects binary logistic regression predicting accurate uses against errors, with fixed effects including proficiency, writing number, L1 type, frequency, reliability, P, and their two-way interactions, plus random effects for learners, nationalities, inflected forms, topics, and form-topic interactions.

Limitations

  • The paper states a major limitation: “the lack of transparency of process while learners write,” meaning the corpus cannot show online processing during writing.
  • The paper notes that teacher corrections in EFCAMDAT were not intended as exhaustive error annotation, though it cites prior evidence that accuracy patterns largely match manually error-tagged corpora. It also states that only omission and misformation errors were analyzed, not overgeneralization errors, and that only reasonably frequent inflected forms were examined.
  • The paper states that it chose one measure of formulaicity (P) rather than testing alternatives, and that word n-grams are a “rather crude scope” that does not capture nonadjacent dependencies or abstract category associations. The text also makes evident that the corpus design is correlational, so causal claims about distributional factors and morpheme accuracy are not directly tested.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1111/lang.12500

Cites

111 of 111 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

33 of 108 cited sources checked · 19 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    Punctuation and capitalization errors lower the accuracy of automated analysis.

    “the first two error types have been demonstrated to lower the accuracy of automated analysis (Huang, Murakami, Alexopoulou, & Korhonen, 2018)”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Huang, Murakami, Alexopoulou, & Korhonen, 2018 source

      The passages labeled Abstract contain bibliographic metadata rather than findings from the paper; no article page is available in the returned passages. Searches for punctuation, capitalization, and parsing accuracy found no passage addressing whether those errors lower automated-analysis accuracy. (LLM, conf=0.72)

      Experimental — accuracy not yet measured
  • Interpretationreasoning

    The analysis of a large-scale learner corpus of L2 writing allowed the current study to target a greater number and range of words and learners than Guo and Ellis (2021).

    “The analysis of a large-scale corpus allowed us to target a greater number and range of words and learners, leading to a study with a larger scope and a more fine-grained picture of the effects of relevant factors than those of the Guo and Ellis study.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source
    • Rests on an assumption: Frequency effects are more often evidenced in automatic online language processing than in more considered production tasks where there is more time for conscious creation and editing.
  • Interpretationreasoning

    The experimental nature of Guo and Ellis's (2021) study limited its scope for the numbers of learners and words targeted.

    “Whereas this study was certainly informative, its experimental nature nevertheless limited its scope for the numbers of learners and words targeted.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source
  • Interpretationcitation

    The positive association between contingency and accuracy in this study is consistent with previous usage-based literature that has repeatedly demonstrated the facilitative role of contingency in language acquisition, processing, and use.

    “This finding is consistent with findings reported in the previous literature on usage-based theories that have repeatedly demonstrated the facilitative role of contingency in language acquisition, processing, and use (e.g., N. C. Ellis et al., 2014;Matthews & Theakston, 2006).”
    Quote in the paperNot a substantial claim2 of 2 sources checked
    • cites N. C. Ellis et al., 2014 source
    • cites Matthews & Theakston, 2006 source

      The General Discussion (page not available in our copy) reports that, for high-frequency irregular plurals, an inflected form that is more frequent relative to its stem is less likely to be omitted. This supports a related association between relative frequency and children's inflection accuracy, but the paper does not establish a general facilitative role for contingency across language acquisition, processing, and use. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
  • Premisecitation

    Previous usage-based research, including Guo and Ellis (2021) using an EIT, had shown effects of formulaicity on language acquisition and processing.

    “previous usagebased research had shown general effects of formulaicity on language acquisition and processing (e.g., Bannard & Matthews, 2008) and, more specifically, the results of Guo and Ellis (2021) using an EIT.”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites Bannard & Matthews, 2008 source
    • cites Guo and Ellis (2021) source
  • Classified as probably not a substantial claim. 96
  • May combine two claims. 46
  • Classified as probably not a substantial claim.

    Premisecitation

    In L1 acquisition, high token frequency surface forms are produced earlier and more accurately than other forms and words inflected in lower token frequency forms.

    “In L1 acquisition, high token frequency surface forms are produced earlier and more accurately in those forms compared to production in other forms and compared to production of other words that are inflected in lower token frequency forms (Aguado-Orea, 2004;Braine et al., 1990;Finley, 2018;Marchman, 1997).”
    Quote in the paperSubstantial claim1 of 3 sources checked
    • cites Aguado-Orea, 2004

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Braine et al., 1990 source

      The Discussion (page not available in our copy) reports that high-frequency suffixes were learned faster than low-frequency suffixes. The Children, Generalization Phase results also report greater accuracy for primary endings, but individual noun–suffix frequency improved ending accuracy only in a limited condition. Because the children learned a miniature artificial language, these results do not establish the claim as a general pattern of L1 acquisition. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites Finley, 2018 source
  • May combine two claims.

    Premisecitation

    More formulaic language is processed faster and acquired earlier than less formulaic language in both L1 and L2.

    “Studies have demonstrated that more formulaic language is processed faster and acquired earlier than less formulaic language both in L1 (e.g., Bannard & Matthews, 2008;Tremblay, Derwing, Libben, & Westbury, 2011) and in L2 (for review, see Siyanova-Chanturia & Pellicer-Sánchez, 2018).”
    Quote in the paperSubstantial claim1 of 3 sources checked
    • cites Bannard & Matthews, 2008 source

      The Abstract (page not supplied) reports that three-year-olds repeated frequent word sequences faster than infrequent ones, supporting the L1 processing-speed claim. The paper tested repetition by two- and three-year-old monolingual English-speaking children; it did not establish that frequent sequences were acquired earlier. The L2 portion of the citing sentence is attached to a different citation, not this paper. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites Tremblay, Derwing, Libben, & Westbury, 2011 source
    • cites Siyanova-Chanturia & Pellicer-Sánchez, 2018

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Reliability influences language change and accuracy and error patterns in L1 and L2 processing and acquisition.

    “Reliability has been shown to influence language change (Bybee, 1985) as well as accuracy and error patterns in L1 (N. C. Ellis, O'Donnell, & Römer, 2014;Hay, 2001;Matthews & Theakston, 2006;Tatsumi et al., 2018) and L2 processing and acquisition (N.C. Ellis et al., 2014;Sugaya & Shirai, 2009).”
    Quote in the paperSubstantial claim1 of 3 sources checked
    • cites Bybee, 1985 source
    • cites N. C. Ellis, O'Donnell, & Römer, 2014 source

      Section 2.2 identifies contingency/reliability as a factor in language learning, and the Discussion reports that contingency affects verb generation by fluent language users. The Introduction also reports evidence concerning L2 acquisition. However, this paper does not establish effects on accuracy or error patterns in L1 or L2 processing and acquisition; its experiments measure verb generation rather than errors (page numbers unavailable in our copy). (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • cites Hay, 2001 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Availability has been widely demonstrated to impact processing, acquisition, and use in both first language (L1) and second language (L2).

    “Availability has been widely demonstrated to impact processing, acquisition, and use in both L1 (e.g., Ambridge, Kidd, Rowland, & Theakston, 2015) and L2 (e.g., N. C. Ellis, 2002;N. C. Ellis, Römer, & O'Donnell, 2016).”
    Quote in the paperSubstantial claim2 of 3 sources checked
    • cites Ambridge, Kidd, Rowland, & Theakston, 2015 source
    • cites N. C. Ellis, 2002 source
    • cites N. C. Ellis, Römer, & O'Donnell, 2016

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Classified as probably not a substantial claim.

    Premisecitation

    R. Ellis (2005) reported factor analyses in which elicited imitation, oral narration, and timed grammaticality judgment tests loaded on Implicit Knowledge, whereas metalinguistic knowledge tests and untimed grammaticality judgment tests loaded on Explicit Knowledge.

    “In designing and validating a battery of language tests that separately tap implicit and explicit learning, R. Ellis (2005) reported factor analyses of measures for L2 learners where elicited imitation, oral narration, and timed grammaticality judgment tests loaded on Implicit Knowledge whereas metalinguistic knowledge tests and untimed grammaticality judgment tests loaded on Explicit Knowledge.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites R. Ellis (2005) source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    In Guo and Ellis's (2021) two experiments, there were no effects of lemma frequency.

    “3. there were no effects of lemma frequency;”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source

      Experiment 1 Results report that lemma frequency was not a significant predictor of morpheme-production accuracy (p = 0.97). Experiment 2 Results list the predictors tested but do not report a separate lemma-frequency test, so our copy does not establish that this finding held in both experiments. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Classified as probably not a substantial claim.

    Premisecitation

    The recognition and preservation of the correct form of target words in EIT is influenced by the forces of availability, contingency, and formulaicity.

    “and likewise here too the recognition and preservation of the correct form of target words in EIT is influenced by the forces of availability, contingency, and formulaicity.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source

      The Experiment 1 process analysis says recognition and preservation of correct target-word forms in EIT are *likely* influenced by availability, reliability, and formulaicity. The Introduction explains that measuring reliability entails estimating contingency, and the Conclusion reports EIT effects for all three factors. The claim is close in substance but states the proposed effect on recognition and preservation as a fact rather than a likelihood. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    In Guo and Ellis's (2021) two experiments, effects of reliability (but not frequency) were greater at lower levels of proficiency.

    “4. effects of reliability (but not frequency) were greater at lower levels of proficiency;”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    In Guo and Ellis's (2021) two experiments, word-form frequency had smaller but significant effects, particularly on plural -s and third-person present-tense -s.

    “2. word-form frequency had smaller but significant effects particularly on plural -s and third-person present-tense -s;”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    In Guo and Ellis's (2021) Experiment 2, higher frequency 4-word strings were associated with increased accuracy of production of the morphemes embedded therein (phrase-superiority effects).

    “5. Experiment 2 also demonstrated phrase-superiority effects whereby higher frequency 4-word strings were associated with increased accuracy of production of the morphemes embedded therein.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    In Guo and Ellis's (2021) two experiments, reliability (contingency) had highly significant effects on the accuracy of provision, particularly of plural -s, third-person present-tense -s, and progressive -ing.

    “1. there were highly significant effects of reliability (i.e., contingency) on the accuracy of provision (particularly of plural -s, third-person present-tense -s, and progressive -ing);”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source

      In the Experiment 1 and Experiment 2 Results, reliability was a highly significant overall predictor of provision accuracy in both experiments (p = 0.000). The morpheme-specific claim needs qualification: Experiment 1 found a significant effect for plural -s, a marginal effect for third-person -s, and no significant effect for progressive -ing. Experiment 2 found significant effects for all three, although the progressive -ing effect was p = 0.047. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Interpretationown data

    The current study has a larger scope and a more fine-grained picture of the effects of relevant factors than Guo and Ellis (2021).

    “The analysis of a large-scale corpus allowed us to target a greater number and range of words and learners, leading to a study with a larger scope and a more fine-grained picture of the effects of relevant factors than those of the Guo and Ellis study.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    The perception and comprehension encoding stages involve three parts: (a) taking word-forms into an auditory/lexical buffer, (b) linking lexical items syntactically, and (c) constructing a meaningful interpretation of the sentence.

    “The perception and comprehension encoding stages involve three parts: (a) taking word-forms into an auditory/lexical buffer, (b) linking lexical items syntactically, and (c) constructing a meaningful interpretation of the sentence.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source

      The Experiment 1 section, “A Process Analysis of EIT as It Relates to Morpheme Production,” lists all three parts almost verbatim. It specifies that this account concerns the perception and comprehension encoding stages *in EIT*; the citing sentence omits that task-specific qualification. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductcitation

    The random-effects structure was close to the maximal model, except that interaction terms were not included as random slopes.

    “This randomeffects structure was close to the maximal model (Barr, Levy, Scheepers, & Tily, 2013), except that we did not include the interaction terms as random slopes.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Barr, Levy, Scheepers, & Tily, 2013 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    Appendix S3 presents prior predictive checks.

    “Appendix S3 in the online Supporting Information presents the prior predictive checks (Schad, Betancourt, & Vasishth, 2021).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Schad, Betancourt, & Vasishth, 2021 source

      The paper’s “Prior predictive checks” section describes and performs prior predictive checks. It does not establish what Appendix S3 of the citing paper’s online Supporting Information contains, so it supports the methodological reference but not the appendix-specific statement. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Interpretationcitation

    The finding replicated Murakami (2014), who did not identify a clear effect of L1 on third person -s or progressive -ing but found some L1 influence on plural -s.

    “The finding, however, replicated Murakami (2014), who did not identify a clear effect of L1 on third person -s or progressive -ing but found some L1 influence on plural -s in an earlier version of EFCAMDAT.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Murakami (2014) source

      The Summary of the regression analysis says plural -s is mildly affected by L1 and third person -s is relatively immune, supporting those parts of the claim. But it places progressive -ing among the morphemes most sensitive to L1 influence, rather than finding no clear effect. The longitudinal clustering analysis reports little apparent L1 effect for progressive -ing, so the claim reflects one analysis but overgeneralizes the paper’s findings. (LLM, conf=0.90)

      Experimental — accuracy not yet measured
    • The authors state this as an assumption: The L1 of each nationality group is as specified (e.g., Brazil = Brazilian Portuguese, China and Taiwan = Mandarin Chinese, France = French, Germany = German, Italy = Italian, Japan = Japanese, Mexico = Spanish, Russia = Russian, Saudi Arabia = Arabic, and Turkey = Turkish).
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingnone given

    Some of the findings of this study replicate those of Guo and Ellis (2021), while some do not.

    “Some of these findings replicate those of Guo and Ellis (2021), who investigated these effects in an EIT; some do not.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source
  • May combine two claims.

    Premisereasoning

    Guo and Ellis (2021) simply replaced pronoun contexts with proper-noun contexts, a blunt instrument that would have caused large reductions in formulaicity however it was measured.

    “Guo and Ellis (2021) simply replaced pronoun contexts with proper-noun contexts, a blunt instrument that would have caused large reductions in formulaicity however it was measured.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Guo and Ellis (2021) source

      Experiment 2’s Method (page unavailable) says the authors replaced pronouns with person names for the three verbal morphemes, and the resulting four-word strings typically had a corpus frequency of zero. But for noun plurals they inserted adjectives instead. The paper supports a large reduction in its four-word string-frequency measure, not the claim that the replacement was the entire manipulation or would reduce formulaicity however measured. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    There is a wide range of ways to measure formulaicity, ranging from string frequency through measures of association including mutual information, mutual expectation, and P.

    “there is a wide range of ways to measure formulaicity, ranging from string frequency through measures of association including mutual information, mutual expectation, P (see examples such as Saito, 2020 or Tavakoli & Uchihara, 2020)”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites Saito, 2020 source
    • cites Tavakoli & Uchihara, 2020

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Only in the last few years has it become possible to bring together cognition, corpora, and computing at scale to triangulate research in usage-based language learning.

    “Only in the last few years has it become possible to bring together cognition, corpora, and computing at scale to triangulate research in usagebased language learning (N.C. Ellis, 2017).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites N.C. Ellis, 2017 source

      The Introduction brings together corpus-linguistic, psychological, and psycholinguistic evidence for usage-based accounts, and Section 2 describes analysis of a 100-million-word corpus. The paper does not say that combining cognition, corpora, and computing at scale became possible only in the last few years; that timing claim is unsupported. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    In L1 acquisition, the relative frequency of different forms of the same word predicts usage and error patterns in morpheme acquisition.

    “We have already described how, in L1 acquisition, the relative frequency of different forms of the same word have been found to predict the usage and error patterns in morpheme acquisition (Bybee, 1985;Hay, 2001;Matthews & Theakston, 2006).”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites Bybee, 1985 source
    • cites Hay, 2001 source
    • cites Matthews & Theakston, 2006 source
  • May combine two claims.

    Findingown data

    Availability and formulaicity were not predictors of accuracy of morpheme production in L2 English writing.

    “Contrary to previous research investigating online processing, we did not identify in our study availability and formulaicity as predictors of accuracy of morpheme production in writing.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    For the interaction of writing number and frequency for third person -s, the 95% credible intervals of the posterior distribution of frequency only excluded 0 after 112 writings (for a single learner).

    “only excluded 0 after 112 writings (for a single learner) for the interaction of writing number and frequency for third person -s”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Only a small number of learners in the data contributed 112/113 writings: four learners for the interaction of writing number and frequency for third person -s and three learners for the interaction of writing number and P for progressive -ing.

    “only a small number of learners in our data contributed 112/113 writings (i.e., four learners in the interaction of writing number and frequency for third person -s and three learners in the interaction of writing number and P for progressive -ing).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    Reliability and accuracy were positively associated for all the morphemes except for progressive -ing.

    “Reliability and accuracy were positively associated for all the morphemes except for progressive -ing.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    The 95% credible intervals of the frequency parameter only excluded 0 for progressive -ing, suggesting that the effects of token frequency could not be reliably identified in our data.

    “The 95% credible intervals of the frequency parameter only excluded 0 for progressive -ing, suggesting that the effects of token frequency could not be reliably identified in our data.”
    Quote in the paperSubstantial claim
    • The authors state this as an assumption: The effects of frequency on accuracy are multiplicative.
  • May combine two claims.

    Findingown data

    P was positively correlated with accuracy for progressive -ing and third person -s, but the relationship was unclear for the other two morphemes.

    “P was positively correlated with accuracy for progressive -ing and third person -s, but the relationship was unclear for the other two morphemes.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    P was not strongly associated with accuracy, except for past tense -ed where it was negatively correlated with accuracy.

    “As was the case for frequency, P was not strongly associated with accuracy, except for past tense -ed where it was negatively correlated with accuracy.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The distribution of nationality groups in the data was skewed, with Brazilian learners occupying 43% to 48% of observations for each morpheme, followed by Chinese, Mexican, and German learners each contributing 6% to 13% for each morpheme.

    “The distribution of the nationality groups was skewed, with Brazilian learners occupying 43% to 48% of observations for each of the morphemes, followed by Chinese, Mexican, and German learners each contributing 6% to 13% for each morpheme.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    There was no clear association between frequency and accuracy, except for progressive -ing (across proficiency levels) and for third person -s (intermediate- to high-proficiency levels).

    “However, we could not identify a clear association between frequency and accuracy, except for progressive -ing (across proficiency levels) and for third person -s (intermediate-to high-proficiency levels).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Writing number was positively correlated with accuracy, although the 95% credible intervals excluded 0 only for past tense -ed and for progressive -ing.

    “Writing number was also positively correlated with accuracy, although the 95% credible intervals excluded 0 only for past tense -ed and for progressive -ing.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    For L1 type, 95% credible intervals excluded 0 only for plural -s, where the PRESENT group outperformed the ABSENT group.

    “Similarly, for L1 type, 95% credible intervals excluded 0 only for plural -s, where the PRESENT group outperformed the ABSENT group.”
    Quote in the paperNot a substantial claim
    • The authors state this as an assumption: The L1 of each nationality group is as specified (e.g., Brazil = Brazilian Portuguese, China and Taiwan = Mandarin Chinese, France = French, Germany = German, Italy = Italian, Japan = Japanese, Mexico = Spanish, Russia = Russian, Saudi Arabia = Arabic, and Turkey = Turkish).
  • May combine two claims.

    Findingown data

    The only interaction parameters whose 95% credible intervals did not include 0 were the interaction of mean Englishtown level and frequency for third person -s, the interaction of writing number and frequency for third person -s, and the interaction of writing number and P for progressive -ing.

    “the only parameters for which 95% credible intervals did not include 0 were the interaction of the mean Englishtown level and frequency for third person -s, the interaction of writing number and frequency for third person -s, and the interaction of writing number and P for progressive -ing.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Frequency looked to be positively correlated with accuracy for progressive -ing, third person -s, and plural -s but not for past tense -ed.

    “Frequency looked to be positively correlated with accuracy for progressiveing, third person -s, and plural -s but not for past tense -ed.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    For the interaction of writing number and P for progressive -ing, the 95% credible intervals of the posterior distribution of P only excluded 0 after 113 writings.

    “113 writings for the interaction of writing number and P for progressive -ing”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data

    There appeared to be positive associations in Figure 1 for progressive -ing, third person -s, and plural -s.

    “Although there appeared to be positive associations in Figure 1 for progressive -ing, third person -s, and plural -s”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Our study did not identify consistent effects of availability or formulaicity on morpheme accuracy.

    “our study did not identify consistent effects of availability or formulaicity on morpheme accuracy.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The large corpora used reflect typical language exposure for L2 learners.
    • Rests on an assumption: The learner corpora are representative of L2 English learners broadly.
  • Classified as probably not a substantial claim.

    Premisecitation

    Cues that are rare and unreliable are learned late and are relatively weaker, even in adults.

    “Cues that are rare and unreliable are learned late and are relatively weaker, even in adults (MacWhinney, 1997).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites MacWhinney, 1997

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Psychological research has demonstrated profound and omnipresent impacts of contingency in the learning of cue-outcome associations.

    “Psychological research into animal and human learning alike has demonstrated profound and omnipresent impacts of contingency in the learning of cue-outcome associations (Shanks, 1995).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Shanks, 1995 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Some morphemes are acquired earlier than others.

    “Some morphemes are acquired earlier than others as, for example, the classic studies of morpheme acquisition order demonstrated (e.g., Dulay & Burt, 1973, 1974).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Dulay & Burt, 1973, 1974

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Many adult L2 learners will never acquire total control of L2 morphology, even after tens of years of English immersion.

    “At the extreme, many adult L2 learners will never acquire total control of L2 morphology, even after tens of years of English immersion (e.g., in spoken production, Johnson & Newport, 1989;Schmidt, 1984).”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites Johnson & Newport, 1989 source
    • cites Schmidt, 1984

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationown data

    The finding that contingency predicts morpheme accuracy supports the usage-based view that language learners are sensitive to distributional properties in their input.

    “thereby supporting the usage-based view that language learners are sensitive to distributional properties in their input.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Contingency learning is central to the competition model, a psycholinguistic theory of language acquisition and sentence processing.

    “Contingency learning is central to the competition model, a psycholinguistic theory of language acquisition and sentence processing (MacWhinney, 1987;MacWhinney & Bates, 1989), as well as to other psycholinguistic models of construction learning such as the rational learning of form-function contingencies (N.C. Ellis, 2006).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites MacWhinney, 1987 source
    • cites MacWhinney & Bates, 1989
    • cites N.C. Ellis, 2006 source
  • Classified as probably not a substantial claim.

    Study design and conductreasoning

    For reliability, the analysis of the three verbal morphemes targeted only words with a minimum of five occurrences in each CEFR level A1 through C1.

    “In addition, for the sake of reliability, we targeted only words with a minimum of five occurrences in each of the CEFR levels A1 through C1 in the analysis of the three verbal morphemes.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisereasoning

    In parsing and interpreting the target morphemes, there are influences of syntactic integrity, for example, auxiliary [be] impacting particularly progressive -ing, and influences of contextual support that could impact the encoding of the past -ed.

    “In parsing and interpreting the target morphemes, there are influences of syntactic integrity, for example, auxiliary [be] impacting particularly progressive -ing and influences of contextual support that could impact the encoding of the past -ed.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Study design and conductcitation

    The study replaced punctuation, capitalization, and space-related errors with teacher-corrected portions before automated analysis.

    “we replaced the original learner writing with the corresponding teacher-corrected portion insofar as these errors were concerned”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Space-related errors often lead to erroneous part-of-speech tagging due to inaccurate tokenization.
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).

    Premisecitation

    There is immense scope for creativity in choosing where, and at what levels of grain, to follow the norms and where to exploit them.

    “There is immense scope for creativity in choosing where, and at what levels of grain, to follow the norms and where to exploit them (Hanks, 2013).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Hanks, 2013 source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Writing involves much more conscious analysis and attention to complex aspects of writing during decision making, problem-solving behaviors involving heuristic searches, and well-differentiated control strategies.

    “it involves much more conscious analysis and attention “to complex aspects of writing during decision making; problem-solving behaviors involving heuristic searches; and well-differentiated control strategies” (Cumming, 1989, p. 81).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Cumming, 1989 source
  • May combine two claims.

    Premisereasoning

    Elicited imitation requires fluent online perception involving implicit or automatized processing, unlike written composition.

    “Unlike written composition (i.e., with content generated by the learner), it requires fluent online perception involving implicit or automatized processing.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Frequency effects are more often evidenced in automatic online language processing than in more considered production tasks where there is more time for conscious creation and editing.
    • Rests on an assumption: Implicit and automatized processing takes place automatically, ballistically, and unconsciously.
    • Rests on an assumption: Implicit processing runs on the system of linguistic representations that have been tuned by prior usage.
  • Classified as probably not a substantial claim.

    Interpretationreasoning

    The more the demand for immediacy and automaticity of production, the greater the likely impact of these factors.

    “The more the demand for immediacy and automaticity of production, the greater the likely impact of these factors.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    Shatz (2020) estimated the correct topics of writings in EFCAMDAT.

    “Shatz (2020) estimated the correct topics of writings in EFCAMDAT”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Shatz (2020) source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Writing is considerably slower than speech.

    “On the whole, writing is considerably slower than speech”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Cumming, 1989 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisereasoning

    Cue-weights differ between languages because different languages use different cues to signal meanings.

    “Cue-weights differ between languages because different languages use different cues to signal meanings.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Models of L1 auditory sentence processing such as chunk-and-pass processing suggest that the language system rapidly integrates all available incoming information, interactively satisfying multiple probabilistic constraints as quickly as possible, to update the current interpretation of what has been said so far.

    “Models of L1 auditory sentence processing such as chunk-and-pass processing (Christiansen & Chater, 2016) suggest that the language system rapidly integrates all available incoming information, interactively satisfying multiple probabilistic constraints as quickly as possible, to update the current interpretation of what has been said so far.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Christiansen & Chater, 2016

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Premisereasoning

    Incremental identification of incoming units is influenced by the sequential probabilities of what has been processed to date: the next word in a well-entrenched word sequence is more easily identified, as is an incoming morpheme that is highly predicted in its context.

    “Incremental identification of incoming units is influenced by the sequential probabilities of what has been processed to date: The next word in a well-entrenched word sequence is more easily identified as is an incoming morpheme that is highly predicted in its context.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    Conscious strategies in writing override the distributional norms offered up from the automatized/implicit system.

    “These conscious strategies override the distributional norms that are offered up from the automatized/implicit system.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    The encoding of third person present -s and plural -s on subjects is also under the influence of syntactic integrity, although in English, agreement processing is generally less obligatory than processing for tense and aspect.

    “The encoding of third person present -s and plural -s on subjects is also under the influence of syntactic integrity, although in English, agreement processing is generally less obligatory than processing for tense and aspect (MacWhinney, 1997(MacWhinney, , 2008)).”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites MacWhinney, 1997

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites MacWhinney, 2008 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    The highly controlled contexts of morpheme occurrences and the use of elicited imitation as a language processing task afforded experimental validity through controlled decontextualized language perception and repetition.

    “Also, the highly controlled contexts of the morpheme occurrences and the use of elicited imitation as a language processing task afforded experimental validity through controlled decontextualized language perception and repetition at the expense of ecological validity in situations of rich, meaningful, and morenaturalistic communication.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Study design and conductreasoning

    Examining multiple morphemes increases confidence that distributional factors such as frequency are general principles underlying accurate morpheme use if the factors are positively correlated with accuracy across the morphemes.

    “We examined multiple morphemes because we could be more confident that distributional factors such as frequency are the general principles underlying accurate morpheme use if the factors were positively correlated with accuracy across the morphemes.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    The final stage of EIT, production (whether oral or written), could also be sensitive to frequency effects and sequential probabilities at word, morpheme, and, particularly, phrasal levels: a well-entrenched formulaic phrase can support provision of its component morphemes whether they are analyzed or not.

    “The final stage of EIT, production (whether oral or written), could also be sensitive to frequency effects and sequential probabilities at word, morpheme, and, particularly, phrasal levels: A well-entrenched formulaic phrase can support provision of its component morphemes whether they are analyzed or not (Arnon & Clark, 2011).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Arnon & Clark, 2011 source
  • Classified as probably not a substantial claim.

    Interpretationreasoning

    L2 learners must learn which cues are important in which languages.

    “Thus, L2 learners must learn which cues are important in which languages.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Formulaic language is more common in speech than in writing.

    “Formulaic language is more common in speech than in writing (Erman & Warren, 2000)”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Erman & Warren, 2000 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Explicit knowledge correlates more strongly with written skills (writing and reading) than implicit knowledge does.

    “explicit knowledge correlated more strongly with the written skills (writing and reading).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Elder and Ellis (2009) source
  • Classified as probably not a substantial claim.

    Study design and conductcitation

    The study annotated original and corrected versions with part-of-speech tags via TreeTagger with the English model to solve ambiguities.

    “We then annotated the original (i.e., learner-written) and corrected (i.e., teacher-corrected) versions of each writing with part-of-speech tags via TreeTagger (Schmid, 1994) with the provided English model in order to solve ambiguities”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Schmid, 1994

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • Rests on an assumption: TreeTagger with the provided English model solves part-of-speech ambiguities such as plural -s vs. third person -s.
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based). May combine two claims.

    Premisenone given

    Most writing is far less mundane than texting, and at the other extreme, writing can look more like this current article, the result of numerous edits, reworkings, and conscious revisions.

    “However, most writing is far less mundane than texting, and at the other extreme, writing can look more like this current article, the result of numerous edits, reworkings, and conscious revisions.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    Consciousness affords novelty.

    “consciousness affords novelty (N.C. Ellis, 2015).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites N.C. Ellis, 2015 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Automaticity relies upon memorized structures and habits.

    “Automaticity relies upon memorized structures and habits”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites N.C. Ellis, 2015 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Implicit knowledge correlates more strongly with oral skills (speaking and listening) than explicit knowledge does.

    “implicit knowledge correlated more strongly with the oral skills (speaking and listening)”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Elder and Ellis (2009) source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisereasoning

    Relevant cues include sentence-internal information about lexical and structural biases as well as extra-sentential cues from the referential and pragmatic context.

    “Relevant cues include sentence-internal information about lexical and structural biases as well as extra-sentential cues from the referential and pragmatic context”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Premisereasoning

    As the incoming auditory information is chunked, it is rapidly integrated with prior information to recognize words and morphemes that are in turn chunked into larger multiword units.

    “As the incoming auditory information is chunked, it is rapidly integrated with prior information to recognize words and morphemes that are in turn chunked into larger multiword units.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Psycholinguistic research has demonstrated a variety of frequency effects in the perception and processing of words, morphemes, multiword chunks, and syntactic constructions.

    “Psycholinguistic research has demonstrated a variety of frequency effects in the perception and processing of words, morphemes, multiword chunks, and syntactic constructions”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    L2 learners begin with cues that are more available in the input and/or those they are most attuned to from their L1, after which they come to rely upon cues that are more reliable in their interpretations.

    “To do this, they begin with cues that are more available in the input and/or those that they are most attuned to from their L1 (MacWhinney, 2008), after which they come to rely upon cues that are more reliable in their interpretations.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites MacWhinney, 2008 source
  • Classified as probably not a substantial claim.

    Study design and conductreasoning

    The study retained spelling errors uncorrected.

    “we retained these spelling errors uncorrected”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The correction of grammatical morphemes is occasionally coded as spelling errors in EF-CAMDAT.
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductnone given

    Appendix S5 presents the numerical summary of each parameter in each model as well as histograms showing the posterior distribution of each fixed-effects parameter.

    “Appendix S5 in the online Supporting Information presents the numerical summary of each parameter in each model as well as the histograms showing the posterior distribution of each fixed-effects parameter.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Cognitive linguistic theories of construction grammar focus on lexical, morphological, and syntactic forms as form-function pairings.

    “Cognitive linguistic theories of construction grammar focus on lexical, morphological, and syntactic forms as form-function pairings (Goldberg, 1995(Goldberg, , 2006;;Trousdale & Hoffmann, 2013).”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites Goldberg, 1995

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Goldberg, 2006
    • cites Trousdale & Hoffmann, 2013

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Classified as probably not a substantial claim.

    Premisecitation

    Contingency of association is key in cognitive-linguistic, corpus-based, and statistical models of language structure such as collostructional analysis.

    “Contingency of association is similarly key in cognitive-linguistic, corpus-based, and statistical models of language structure like collostructional analysis (Gries & Stefanowitsch, 2004;Stefanowitsch & Gries, 2003).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites Gries & Stefanowitsch, 2004 source
    • cites Stefanowitsch & Gries, 2003 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    The analysis of the interaction effects was restricted to the range of the mean Englishtown level and writing number observed in the study, avoiding extrapolation.

    “without extrapolation (i.e., within the range of the mean Englishtown level and writing number observed in this study)”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationreasoning

    The priors regularized the intercept, slopes, and random-effects standard deviations toward 0, penalizing extreme values and potentially allowing more reliable parameter estimation.

    “The priors, thus, regularized the intercept, slopes, and random-effects standard deviations toward 0, penalizing extreme values and potentially allowing more reliable parameter estimation despite the complexity of the model.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationcitation

    The results were partly consistent with Murakami and Alexopoulou (2016), who found that L1 hardly influenced the accuracy of third person -s although it exerted a stronger effect on plural -s.

    “The results were also partly consistent with Murakami and Alexopoulou (2016), who found that L1 hardly influenced the accuracy of third person -s although it exerted a stronger effect on plural -s in the Cambridge Learner Corpus (Nicholls, 2003).”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites Murakami and Alexopoulou (2016)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Nicholls, 2003

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • The authors state this as an assumption: The L1 of each nationality group is as specified (e.g., Brazil = Brazilian Portuguese, China and Taiwan = Mandarin Chinese, France = French, Germany = German, Italy = Italian, Japan = Japanese, Mexico = Spanish, Russia = Russian, Saudi Arabia = Arabic, and Turkey = Turkish).
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    The R code and data used for modeling are available at IRIS and OSF.

    “For the sake of transparency, we have made available the R code used for the preprocessing of corpora, data retrieval, and data analysis, together with the data used for modeling (Murakami & Ellis, 2022) at IRIS (www.iris-database.org)and OSF (https://osf.io/ba8mf/).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Murakami & Ellis, 2022

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Bayesian models were suited for our analysis because the number of target words was not particularly large and weakly informative priors allow more reliable parameter estimation.

    “Bayesian models were suited for our analysis because the number of target words was not particularly large and Bayesian analyses with weakly informative priors would allow us to more reliably estimate the parameters of interest (see Gudmestad, House, & Geeslin, 2013, for similar arguments in L2 research).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Gudmestad, House, & Geeslin, 2013 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Bayesian methods yield the full posterior distribution that is more informative than point estimates.

    “(b) the full posterior distribution that is more informative than point estimates”
    Quote in the paperSubstantial claim0 of 3 sources checked
    • cites Kruschke, 2014
    • cites Lambert, 2018 source
    • cites McElreath, 2020 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Bayesian methods yield more intuitive uncertainty metrics.

    “(c) more intuitive uncertainty metrics”
    Quote in the paperSubstantial claim0 of 3 sources checked
    • cites Kruschke, 2014
    • cites Lambert, 2018 source
    • cites McElreath, 2020 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    We did not perform variable selection due to the many problems associated with this procedure.

    “We did not perform variable selection due to the many problems associated with this procedure (e.g., Harrell, 2015).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Harrell, 2015 source
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    The first three levels of Englishtown correspond to A1 in CEFR, the second three levels to A2, and so forth.

    “According to EF Education First, the first three levels of Englishtown correspond to A1 in CEFR, the second three levels to A2, and so forth (Geertzen et al., 2014).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Geertzen et al., 2014

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    All the models converged reasonably well (all R values < 1.05).

    “All the models converged reasonably well (all R values < 1.05).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductnone given

    Appendix S4 presents trace plots, posterior predictive checks, and a sensitivity analysis.

    “Appendix S4 in the online Supporting Information presents trace plots, posterior predictive checks, and a sensitivity analysis.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    COCA (version released March 2020) can be used as a first approximation of L2 learners' input.

    “We computed availability, contingency, and formulaicity based on the COCA version released in March 2020 (Davies, 2008-) that has been used in previous research as a first approximation of L2 learners' input (e.g., Monteiro, Crossley, & Kyle, 2020;Wolter & Yamashita, 2018).”
    Quote in the paperSubstantial claim0 of 3 sources checked
    • cites Davies, 2008-

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Monteiro, Crossley, & Kyle, 2020

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Wolter & Yamashita, 2018

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Contingency of cue-outcome mapping is a driving force of all associative learning, human and animal alike.

    “Contingency of cue-outcome mapping is a driving force of all associative learning, human and animal alike, to the degree that the field in which it is studied has become known as contingency learning (Shanks, 1995).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Shanks, 1995 source
  • May combine two claims.

    Premisecitation

    In a case study of a native Russian speaker learning Japanese over 10 months, verbs that are more consistently conjugated in a certain common form compared to other possible forms were produced exclusively in the common form early in the learning trajectory, whereas this preferential bias was not observed for verbs that do not have a common form.

    “They found that verbs that are more consistently conjugated in a certain common form compared to other possible forms, such as siru”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Sugaya and Shirai (2009) source
  • Probably not a substantial claim: may not pass S2 (checkable). May combine two claims.

    Premisereasoning

    Form-form and form-function associations interact in various complex and adaptive ways in usage, and speakers' language systems reflect the history of their processing these associations.

    “Form-form and form-function associations interact in various complex and adaptive ways in usage, and speakers' language systems reflect the history of their processing these associations.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Collostructional analysis focuses on form-form reliability in measuring the degree of attraction or repulsion that words exhibit to constructions.

    “Collostructional analysis focuses on form-form reliability in measuring the degree of attraction or repulsion that words exhibit to constructions.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).

    Study design and conductreasoning

    We held firm to our choice of formulaicity measure rather than fishing with different measures.

    “We held firm to this choice rather than fishing with different measures.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    The aspect hypothesis has investigated these patterns in the initial acquisition of tense-aspect for past tense -ed, progressive -ing, and third person -s.

    “The aspect hypothesis has investigated these patterns in the initial acquisition of tense-aspect for past tense -ed, progressive -ing, and third person -s”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Functional theories of SLA emphasize the interplay of form and meaning in acquisition.

    “Functional theories of SLA emphasize the interplay of form and meaning in acquisition.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based). May combine two claims.

    Premisenone given

    Morphemes and lemmas are linguistic constructions with particular functions and meanings; they are symbolic.

    “morphemes and lemmas go beyond being mere forms, they are linguistic constructions with particular functions and meanings; they are symbolic.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based).

    Premisereasoning

    When learners are processing usage, they are tallying the associations among forms, among interpretations, and between forms and their interpretations.

    “When learners are processing usage, they are tallying the associations among forms, among interpretations, and between forms and their interpretations.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Premisereasoning

    Word n-gram does not capture nonadjacent structural dependency of words or association between abstract categories.

    “It, for example, does not capture nonadjacent structural dependency of words (e.g., subject and verb) or association between abstract categories (e.g., part of speech).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Availability entails that higher-proficiency learners will have at their disposal a wider range of items than will have low-proficiency learners.

    “Availability entails that higher-proficiency learners will have at their disposal a wider range of items than will have low-proficiency learners.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Premisenone given

    In creative written production, in response to the demands of the prompt and the current state of exposition, various ideas come to the minds of learners, and they respond with whatever available and relevant language forms that are associated with these ideas.

    “In contrast, in creative written production, in response to the demands of the prompt and the current state of exposition, various ideas come to the minds of learners, and they respond with whatever available and relevant language forms that are associated with these ideas.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Premisenone given

    Associative learning theory demonstrates that contingency of association trumps token frequency.

    “Associative learning theory demonstrates that contingency of association trumps token frequency (as described in the section Contingency).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Premisenone given

    Associative learning theory explains that people learn contingencies that are relevant to their predictive processing.

    “Associative learning theory explains that people learn contingencies that are relevant to their predictive processing.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based).

    Premisenone given

    Cognitive linguistics explains why certain form-meaning relations are more contingent in usage.

    “Cognitive linguistics explains why certain form-meaning relations are more contingent in usage.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Premisereasoning

    Verbs and morphemes can be more or less reliably associated (form-form contingency).

    “Verbs and morphemes can be more or less reliably associated (form-form contingency).”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Interpretationnone given

    EITs prioritize online implicit and automatized processing running on the system of linguistic representations that have been tuned by prior usage, whereas writing involves more explicit, conscious processing.

    “EITs prioritize online implicit and automatized processing running on the system of linguistic representations that have been tuned by prior usage, whereas writing, in contrast, involves more explicit, conscious processing.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    The aspect hypothesis emphasizes these effects in the initial acquisition of tense-aspect.

    “The aspect hypothesis emphasizes these effects in the initial acquisition of tense-aspect.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    A major limitation of our study is the lack of transparency of process while learners write.

    “A major limitation of our study is the lack of transparency of process while learners write.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Premisenone given

    Cognitive linguistic theories of construction grammar view lexical, morphological, and syntactic forms as symbolic form-function pairings and hold that people learn language from usage.

    “Cognitive linguistic theories of construction grammar view lexical, morphological, and syntactic forms as symbolic form-function pairings and hold that people learn language from usage.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based).

    Interpretationreasoning

    It is quite likely that learners are more sensitive to certain types of structural and semantic association than to others.

    “It is quite likely that learners are more sensitive to certain types of structural and semantic association than to others.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    Our work is open and transparent as a result of our making available the R code and data.

    “our work is open and transparent as a result of our making available the R code and data.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    The range of learners is wider than that of typical experimental studies.

    “the range of learners is wider than that of typical experimental studies”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    A possible reason for the absence of noticeable token frequency effects is that we only examined reasonably frequent forms in which frequency effects had presumably approached ceiling.

    “Another possible reason is that we only examined the reasonably frequent forms (i.e., inflected forms) in which frequency effects had presumably approached ceiling.”
    Quote in the paperNot a substantial claim
    • The authors state this as an assumption: Frequency effects had approached ceiling in the reasonably frequent forms examined.
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).

    Study design and conductreasoning

    Our research is reasonably large in scale.

    “it is reasonably large in scale”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Bardovi-Harlig and Comajoan-Colomé concluded from their review of about 30 studies that the aspect hypothesis accurately predicts the adult L2 acquisition of past morphology in a number of languages.

    “Bardovi-Harlig and Comajoan-Colomé concluded from their review of about 30 studies that the aspect hypothesis accurately predicts the adult L2 acquisition of past morphology in a number of languages.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Bardovi-Harlig and Comajoan-Colomé

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Premisenone given

    The present investigations would not have been possible without large corpora of language that reflect typical language exposure as well as large learner corpora covering tens of thousands of participants ranging widely in demographics.

    “The present investigations would not have been possible without large corpora of language that reflect typical language exposure as well as large learner corpora covering tens of thousands of participants ranging widely in demographics.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Interpretationreasoning

    One answer for the absence of noticeable token frequency effects lies in the differences between EITs and free written production.

    “One answer lies in the differences between EITs and free written production.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Study design and conductown data

    The study manually calculated the precision and recall of the identification of errors and accurate uses.

    “Also, and more importantly, we manually calculated the precision and recall of the identification of errors and accurate uses (see Appendix S1 in the online Supporting Information).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    The difference between the present study's null effects of raw frequency and formulaicity and the previous experimental study's positive effects is possibly due to methodological differences between the experimental task and the written compositions in EFCAMDAT.

    “This difference is possibly due to methodological differences between the experimental task (elicited imitation, demanding online processing of predetermined stimuli) and the more conscious, written compositions in EF-CAMDAT analyzed for the current study, in which learners decide which language they need, and so the language may be less prone to effects of formulaicity or the frequency of inflect”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Murakami and Alexopoulou (2016) found a strong influence of L1 on progressive -ing, a finding inconsistent with the present study.

    “Murakami and Alexopoulou (2016) also found a strong influence of L1 on progressive -ing, a finding inconsistent with the present study.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Murakami and Alexopoulou (2016)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    The accuracy of POS tagging per se is not relevant to the study's conclusions because the accuracy was examined at a lower end of the data retrieval process.

    “Because we examined the accuracy at a lower end of the data retrieval process, the accuracy of POS tagging per se is not relevant.”
    Quote in the paperNot a substantial claim
120 of 120
  • The paper relies on this without support.

    Grammatical morphemes are ubiquitous across first language (L1) usage, providing tens to thousands of receptive experiences of functional morphemes and tens to thousands of contexts requiring their productive use each day.

    “Grammatical morphemes are ubiquitous across first language (L1) usage: Each day provides tens to thousands of receptive experiences of functional morphemes, and tens to thousands of contexts requiring their productive use.”
  • The paper relies on this without support.

    Frequency effects are more often evidenced in automatic online language processing than in more considered production tasks where there is more time for conscious creation and editing.

    “Frequency effects are more often evidenced in automatic online language processing rather than in more considered production tasks where there is more time for conscious creation and editing.”
  • The paper relies on this without support.

    Implicit and automatized processing takes place automatically, ballistically, and unconsciously.

    “Implicit, as well as automatized processing takes place automatically, ballistically, and unconsciously.”
  • The paper relies on this without support.

    Implicit processing runs on the system of linguistic representations that have been tuned by prior usage.

    “It runs on the system of linguistic representations that have been tuned by prior usage.”
  • The paper relies on this without support.

    Written composition has much more scope for variability of processing than does spoken EIT even with a written production component.

    “Written composition has much more scope for variability of processing than does spoken EIT even with a written production component.”
  • The paper relies on this without support.

    Editing disrupts what is first offered up to consciousness by the implicit systems, then rearranges and builds upon what is on the page, trying to find new and interesting ways of better expressing ideas.

    “Editing disrupts what is first offered up to consciousness by the implicit systems, then rearranges and builds upon what is on the page, trying to find new and interesting ways of better expressing ideas.”
  • The paper relies on this without support.

    Teacher corrections in EFCAMDAT reliably identify errors and accurate uses of the target morphemes.

    “Furthermore, approximately two-thirds of the writings (782,648 writings; 66%) come with teacher corrections that we used as error annotation to calculate morpheme accuracy.”
  • The paper relies on this without support.

    Space-related errors often lead to erroneous part-of-speech tagging due to inaccurate tokenization.

    “the last error type has often led to erroneous part-ofspeech tagging due, for instance, to inaccurate tokenization”
  • The paper relies on this without support.

    Spelling errors often result in parsing errors.

    “Spelling errors often result in parsing errors as well”
  • The paper relies on this without support.

    The correction of grammatical morphemes is occasionally coded as spelling errors in EF-CAMDAT.

    “the correction of grammatical morphemes is occasionally coded as spelling errors in EF-CAMDAT”
  • The paper relies on this without support.

    One issue with the original EFCAMDAT data is that a single topic ID was often assigned to writings that were written with different topics, making it difficult to control for topic effects.

    “One issue with the original EFCAMDAT data is that a single topic ID was often assigned to writings that were written with different topics, making it difficult to control for topic effects.”
  • The paper relies on this without support.

    TreeTagger with the provided English model solves part-of-speech ambiguities such as plural -s vs. third person -s.

    “in order to solve ambiguities (e.g., plural -s vs. third person -s)”
  • The authors state this as an assumption.

    Formulaicity is generally stable across the values of numbers.

    “because formulaicity is presumably generally stable across the values of numbers (e.g., 10 years ago vs. 20 years ago).”
  • The authors state this as an assumption.

    The effects of frequency on accuracy are multiplicative.

    “i.e., its effects were assumed to be multiplicative”
  • The authors state this as an assumption.

    The L1 of each nationality group is as specified (e.g., Brazil = Brazilian Portuguese, China and Taiwan = Mandarin Chinese, France = French, Germany = German, Italy = Italian, Japan = Japanese, Mexico = Spanish, Russia = Russian, Saudi Arabia = Arabic, and Turkey = Turkish).

    “Note.The assumed L1 of each nationality group was: Brazil = Brazilian Portuguese; China and Taiwan = Mandarin Chinese; France = French; Germany = German; Italy = Italian; Japan = Japanese; Mexico = Spanish; Russia = Russian; Saudi Arabia = Arabic; and Turkey = Turkish.”
  • The paper relies on this without support.

    The lemma reflects the semantic meaning of the target word.

    “It suggests that the lemma, which arguably reflects the semantic meaning of the target word, functions as a cue for its inflected forms and that L2 learners use such contingency in processing inflectional morphemes.”
  • The authors state this as an assumption.

    Frequency effects had approached ceiling in the reasonably frequent forms examined.

    “in which frequency effects had presumably approached ceiling.”
  • The paper relies on this without support.

    The large corpora used reflect typical language exposure for L2 learners.

    “large corpora of language that reflect typical language exposure”
  • The paper relies on this without support.

    The learner corpora are representative of L2 English learners broadly.

    “large learner corpora covering tens of thousands of participants ranging widely in demographics”
  • The paper relies on this without support.

    Accuracy of morphemes in written production reflects learners' sensitivity to distributional properties in their input.

    “we found that contingency between inflected forms and their lemmas is robustly associated with morpheme accuracy, suggesting that L2 learners are sensitive to the within-lemma distribution of inflected forms in their input.”
  • The paper relies on this without support.

    The Corpus of Contemporary American English (COCA) accurately represents the distributional characteristics of English as a whole.

    “based on a large-scale corpus of American English (Corpus of Contemporary American English).”
  • The paper relies on this without support.

    The distributional characteristics computed from COCA are valid proxies for the distributional characteristics of learners' input.

    “Usage-based theories hold that (second) language acquisition is influenced by the distributional characteristics of learners' input including such factors as frequency and formulaicity.”
  • The paper relies on this without support.

    The EFCAMDAT corpus is representative of second language learners' writing.

    “We drew data from a large-scale corpus of learner writing (EF-Cambridge”
    “Our study empirically tested this claim by examining the accuracy of four inflectional morphemes (past tense -ed, progressive -ing, third person -s, plural -s) in a large-scale corpus of learner writing.”
  • The paper relies on this without support.

    The four inflectional morphemes studied (past tense -ed, progressive -ing, third person -s, plural -s) are representative of English grammatical morphemes.

    “Our study empirically tested this claim by examining the accuracy of four inflectional morphemes (past tense -ed, progressive -ing, third person -s, plural -s) in a large-scale corpus of learner writing.”
  • The paper relies on this without support.

    Written morpheme accuracy reflects learners' processing of inflectional morphemes when they read or hear input.

    “This suggests that the lemma functions as a cue for its inflected forms and that learners use (tally) such an association in processing inflectional morphemes when they read or hear input.”
25 of 25

Cites

Flagged first, then by citations

Research works printed but not linked: 11

  1. Aguado‐Orea J. J., 2004, The acquisition of morpho‐syntax in Spanish: Implications for current theories of development. (Unpublished doctoral dissertation)
  2. Comrie B., 1976, Aspect
  3. Dias G. Guilloré S. &Pereira Lopes J. G.(1999).Language independent automatic acquisition of rigid multiword units from unrestricted text corpora. InActes de la 6ième Conférence sur le Traitement Automatique des Langues Naturelles(Proceedings of the 6th Conference on Natural Language Processing). Cargèse France: Association pour le Traitement Automatique des Langues. Retrieved fromhttp://talnarchives.atala.org/TALN/TALN‐1999/taln‐1999‐poster‐005.pdf
  4. Geertzen J., 2014, Selected proceedings of the 2012 Second Language Research Forum. Building bridges between disciplines, 240
  5. Goldberg A. E., 1995, Constructions: A construction grammar approach to argument atructure
  6. MacWhinney B., 1997, Tutorials in bilingualism: Psycholinguistic perspectives, 113
  7. MacWhinney B., 2008, Handbook of Cognitive Linguistics and Second Language Acquisition, 341
  8. Murakami A., 2022, Corpus data and R code. Datasets from “Effects of availability, contingency, and formulaicity on the accuracy of English grammatical morphemes in second language writing
  9. Nicholls D.(2003).The Cambridge Learner Corpus: Error coding and analysis for lexicography and ELT. In D. Archer P. Rayson A. Wilson & T. McEnery (Eds.) Proceedings of the Corpus Linguistics 2003 Conference Vol. 16 (pp. 572–581). Lancaster UK: Lancaster University.
  10. Schmid H.(1994).Probabilistic part‐of‐speech tagging using decision trees. InProceedings of International Conference on New Methods in Language Processing(pp.44–49).Manchester UK:University of Manchester Institute of Science and Technology Centre for Computational Linguistics.
  11. Wulff S., 2018, Studies in bilingualism, 37

Cited by

Sorted by citations

Authors
Murakami, A., & Ellis, N. C.
Affiliations
  • University of Birmingham (GB)
  • University of Michigan (US)
Corresponding author
Murakami, Akira
Venue
Language Learning
Publisher
Wiley
Published
2022-04-25
Volume
72
Issue
4
Pages
899-940
ISSN
  • 0023-8333 (ISSN-L)
  • 1467-9922
OpenAlex
W4224311054
Cited by
26
References
100
Citations by year
2026: 5 · 2025: 8 · 2024: 3 · 2023: 8 · 2022: 2
FWCI
7.74
Type
journal article
Language
en
Open access
Locations
  • Language Learning (publishedVersion, cc-by)
  • Deep Blue (University of Michigan) (submittedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion, cc-by)
  • OSF Preprints (OSF Preprints) (submittedVersion)
Funders
University of Cambridge
Topics
  • Social Sciences › Psychology › Developmental and Educational Psychology › Second Language Acquisition and Learning
  • Social Sciences › Arts and Humanities › Language and Linguistics › EFL/ESL Teaching and Learning
  • Social Sciences › Psychology › Developmental and Educational Psychology › Language Development and Disorders
Keywords
grammatical morphemes, inflectional morphology, second language writing, usage-based language acquisition, contingency, availability, formulaicity, token frequency, learner corpus, proficiency level, English as a second language

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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

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