Cited by 5EFL/ESL Teaching and LearningSecond Language Acquisition and LearningLanguage Development and Disorders

Dynamic development of syntactic complexity in second language writing: A longitudinal case study of a young Chinese EFL learner

Open access
Wang, Zhihong·2022·Frontiers in Psychology

Abstract

The present study analyzes the English diaries written by a young Chinese English as a foreign language (EFL) learner over a 1-year period in an attempt to determine the developmental process of Chinese EFL young learners’ written language in terms of syntactic complexity. This study aimed to use a wide range of metrics to explore densely collected data based on Dynamic Systems Theory. The longitudinal study data were analyzed through eight large-grained measures related to sentential, clausal, and phrasal features by using L2 Syntactic Complexity Analyzer, as well as fine-grained measures related to seven modifiers, an adjective placed before a noun, ordinal numerals are indicated (ADJA), cardinal numeral (CARD), predicative adjective, adverbial adjective (ADJP), adverbs (ADV), prepositional phrases (PREP), subordinate (SUB), and relative clause (REL), through manual annotations. The results show that, first, the developmental process was not linear but spiral in terms of large-grained measures. The sentential level varied, and the development process of the young learner is different from Chinese English learners studying in colleges. Second, the dynamic features of fine-grained measures are also prominent in the seven indicators. ADJA, PREP, and REL showed a steady increase, ADJP showed an obvious decline, while ADV and SUB first increased and then declined. Third, the correlation analysis revealed a competitive interaction within fine-grained measures and between large-grained and fine-grained measures.

AI snapshot

Written from the paper’s full text.

TL;DR

This longitudinal case study tracked one 11-year-old Chinese EFL learner’s English diaries over a 1-year period, using large- and fine-grained syntactic complexity measures under Dynamic Systems Theory. It found non-linear, spiral development with competition among subsystems rather than uniform growth.

Key findings

  • Large-grained measures showed unstable, curved development: MLS and MLT increased obviously, MLC increased slightly, C/T and DC/T trended upward, T/S was relatively stable, and CP/C and CN/C fluctuated with opposite trends. Strong correlations appeared between MLS and MLT, and C/T correlated with MLS, MLT, DC/T, and T/S; CP/C correlated negatively with MLS, C/T, DC/T, T/S, and CN/C.
  • Fine-grained measures diverged: ADJA, PREP, and REL showed upward trends; ADJP declined; ADV and SUB first increased then declined; CARD showed no obvious developmental trend. A competitive relation occurred between ADJA and ADJP.
  • Correlation analysis found PREP significantly positively related to MLS (r = 0.738, P < 0.05) and MLT (r = 0.705, P < 0.05); SUB moderately related to MLS (r = 0.543, P < 0.05); PREP related to DC/T (r = 0.604, P < 0.05) and C/T (r = 0.616, P < 0.05); SUB related to DC/T (r = 0.654, P < 0.05) and C/T (r = 0.580, P < 0.05); ADJP negatively related to MLC (r = –0.288, P < 0.05) and CN/C (r = –0.324, P < 0.05).
  • Qualitative reading linked peaks to rich life experiences: MLS peaked in weeks 29, 32, 45, and 51; week 45’s argumentative “Money” diary had the highest C/T and MLS, suggesting genre/topic effects even for a beginner learner.

Methods

  • Longitudinal case study of Alice, a Chinese girl aged 11, based on her English diaries written over a 1-year period in 2017; the corpus comprised 20,665 words and 365 diary entries, later combined into 52 weekly text files because L2SCA requires at least 50 words per file.
  • Eight large-grained syntactic complexity measures were computed with L2 Syntactic Complexity Analyzer at sentential, clausal, and phrasal levels; seven fine-grained modifier types (ADJA, CARD, ADJP, ADV, PREP, SUB, REL) were manually annotated by two English instructors, with Cohen’s kappa = 0.91 and discrepancies resolved through discussion.
  • Development trajectories were described using Excel trend lines, and correlation/clustering analysis was conducted with R heat maps and correlation analysis.

Limitations

  • The paper states that although the study gives insight into one learner’s L2 writing development, “the generalizations cannot be extended to all EFL beginner learners.”
  • The design is a single-participant case study over one year, with naturalistic diaries written without any time limit, given topic, or word limit; these features are evident from the text and limit generalizability and control over task effects.
  • The large-grained analysis aggregated daily diaries into weekly files to meet L2SCA’s minimum word requirement, which is evident from the methods and may obscure within-week variation; fine-grained analysis was also restricted to seven manually annotated modifier types.

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

Integrity signals

Registry

Crossref · 10.3389/fpsyg.2022.974481

Cites

21 of 21 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

4 of 20 cited sources checked · 4 supported · 0 flagged

  • Findingown data

    REL showed a steady increase.

    “ADJA, PREP, and REL showed a steady increase”
    Quote in the paperSubstantial claim
  • Findingown data

    CP/C and CN/C of the phrasal structure fluctuated.

    “CP/C and CN/C of the phrasal structure fluctuated and exhibited an opposite developmental trend.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The eight syntactic complexity indices obtained from L2SCA validly measure syntactic complexity in English writing.
  • Findingown data

    MLT was closely related to the change in MLS.

    “and MLT was closely related to the change in MLS.”
    Quote in the paperNot a substantial claim
  • Findingown data

    The developmental process of the young Chinese EFL learner's written syntactic complexity was not linear but spiral in terms of large-grained measures.

    “The results show that, first, the developmental process was not linear but spiral in terms of large-grained measures.”
    Quote in the paperSubstantial claim
  • Findingown data

    T/S was relatively stable.

    “C/T and DC/T all showed an upward trend while T/S was relatively stable.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The eight syntactic complexity indices obtained from L2SCA validly measure syntactic complexity in English writing.
  • Classified as probably not a substantial claim. 22
  • May combine two claims. 25
  • The quote only partly states this claim. 2
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    Dynamic Systems Theory works at the system level and explains the system's behavior, not at the elemental level.

    “DST works at the system level and explains the system’s behavior, not at the elemental level (Larsen-Freeman and Cameron, 2008).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Larsen-Freeman and Cameron, 2008 source
  • Classified as probably not a substantial claim.

    Premisecitation

    From a Dynamic Systems Theory perspective, language development is a complex system containing many subsystems that interact, are interconnected, and are interdependent.

    “From this perspective, language development is considered a complex system which contains many subsystems that interact, are interconnected, and are interdependent.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Larsen-Freeman and Cameron, 2008 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Several studies have recommended that much narrower measures are needed to capture L2 learners' writing development.

    “Besides the large-grained measures, several studies have recommended that much narrower measures are needed to capture L2 learners’ writing development (e.g., Biber et al., 2011; Mazgutova and Kormos, 2015).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites Biber et al., 2011 source
    • cites Mazgutova and Kormos, 2015 source
  • Probably not a substantial claim: may not pass S2 (checkable).

    Premisecitation

    The approach of using fine-grained measures is helpful in understanding the types of detailed structures learners expand in the sentences.

    “The approach of using fine-grained measures is helpful in understanding the types of detailed structures learners expand in the sentences (Kyle and Crossley, 2018).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Kyle and Crossley, 2018 source
  • May combine two claims.

    Findingown data

    There is a moderate positive relationship among SUB, MLS and MLC (rsub-mls = 0.543, P < 0.05; rprep-mlt = 0.544, P < 0.05).

    “There is a moderate positive relationship among SUB, MLS and MLC (rsub–mls = 0.543, P < 0.05; rprep–mlt = 0.544, P < 0.05).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    ADJA, PREP, and REL showed an upward trend.

    “ADJA, PREP, and REL showed an upward trend;”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    When the participant used more Subject + verb + predicative structures (SVP) simple sentence structures, the MLSs, T-units, and clauses tended to decrease, and noun phrases were rarely used.

    “When the participant used more Subject + verb + predicative structures (SVP) simple sentence structures, the MLSs, T-units, and clauses tended to decrease, and noun phrases were rarely used.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Findingown data

    In week 45, Alice wrote a diary titled Money, listing specific examples of daily consumption of her peers and expressing disapproval of excessive spending and high consumption.

    “While reading the corpus of the 45th week, I found that Alice wrote one diary titled Money, listing specific examples of daily consumption of her peers and expressing her disapproval of excessive spending and high consumption.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Findingown data

    In week 51, when Christmas, New Year's Day, and her mother's birthday were approaching, Alice described in detail how she prepared birthday gifts and how much she looked forward to Christmas and New Year holiday.

    “In week 51, when Christmas, New Year’s Day, and her mother’s birthday were approaching, Alice described in detail how she prepared birthday gifts and how much she looked forward to Christmas and New Year holiday.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Findingown data

    In week 29, Alice had gone on a trip with her family during the summer vacation and described what she saw and felt on the way to the destination.

    “On reading the diary entries for week 29, I found that Alice had gone on a trip with her family during the summer vacation. She described what she saw and felt on the way to the destination.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    C/T and DC/T showed an upward trend.

    “C/T and DC/T all showed an upward trend while T/S was relatively stable.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The eight syntactic complexity indices obtained from L2SCA validly measure syntactic complexity in English writing.
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data

    The graph representing the growth and decline trends are curved, and reflect obvious dynamic characteristics.

    “The graph representing the growth and decline trends are curved, and reflect obvious dynamic characteristics.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The eight syntactic complexity indices obtained from L2SCA validly measure syntactic complexity in English writing.
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingnone given

    In week 32, Alice attended badminton training class and described her experience during the game, including how to play well under the guidance of the coach.

    “In week 32, Alice attended badminton training class, and described her experience during the game (i.e., how to play well under the guidance of the coach).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    PREP and SUB were found to be moderately correlated with DC/T and C/T (rprep-dc/t = 0.604, P < 0.05; rprep-c/t = 0.616, P < 0.05; rsub-dc/t = 0.654, P < 0.05; rsub-c/t = 0.580, P < 0.05).

    “PREP and SUB were found to be moderately correlated with DC/T and C/T (rprep–dc/t = 0.604, P < 0.05; rprep–c/t = 0.616, P < 0.05; rsub–dc/t = 0.654, P < 0.05; rsub–c/t = 0.580, P < 0.05).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Findingnone given

    Syntactic modifiers are used in beginner young learners' syntax in the written output.

    “Besides, syntactic modifiers are used in beginner young learners’ syntax in the written output”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    The frequency of both PREP and REL increased over time, as in the case of ADJA.

    “The frequency of both PREP and REL increased as in the case of ADJA.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    PREP curves were steeper and exhibited an early rise, and prepositional phrases were used more frequently.

    “The PREP curves were steeper and exhibited an early rise, and prepositional phrases were found to be used more frequently.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The frequency of ADV adverb usage was almost zero in the first 6 weeks but increased significantly with the passage of time.

    “The frequency of ADV adverb usage was almost zero in the first 6 weeks but increased significantly with the passage of time.”
    Quote in the paperNot a substantial claim
  • May combine two claims. The quote only partly states this claim.

    Findingown data

    In Alice's corpus, the frequency of ADJP ranked higher than the other fine-grained indicators but decreased gradually over time.

    “As evident from Figure 3, the frequency of ADJP in learners’ corpus ranked higher than the other fine-grained indicators but decreased gradually over time”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationown data

    The increase in the length of sentences and of the T-units takes place not only through expansion at the phrasal level via the use of prepositional phrases but also through expansion at the clausal level via adverbial clauses by adding adjuncts (of time, place, etc.).

    “The correlation results indicate that the increase in the length of sentences and of the T-units takes place not only through expansion at the phrasal level via the use of prepositional phrases but also through expansion at the clausal level via adverbial clauses by adding adjuncts (of time, place, etc.).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    According to Wolfe-Quintero et al. (1998), correlation greater than 0.650 is a strong correlation, 0.450-0.650 is a moderate correlation, and less than 0.450 is a weak correlation.

    “According to Wolfe-Quintero et al. (1998), correlation greater than 0.650 is a strong correlation, 0.450–0.650 is a moderate correlation, and less than 0.450 is a weak correlation.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Wolfe-Quintero et al. (1998)

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

  • Classified as probably not a substantial claim.

    Interpretationown data

    The use of complex syntactic structures in the week 45 diary is reflective of Alice's attempt to state her stand with regard to daily expenses, while discussing and asserting her viewpoint supplemented with examples.

    “and is reflective of her attempt to state her stand with regard to daily expenses, while discussing and asserting her viewpoint supplemented with examples”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    There are significant differences between MLS, MLT, and DC/T in the writing of beginners and intermediate English learners.

    “According to the findings of Jiang et al. (2019), there are significant differences between MLS, MLT, DC/T in the writing of beginners and intermediate English learners.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Jiang et al. (2019) source
  • Classified as probably not a substantial claim.

    Premisecitation

    Usage of different modifiers can serve as developmental indicators for young beginner learners progressing from pre-attributive modifiers to post-phrasal and clausal modifiers.

    “Jiang et al. (2019) found that usage of different modifiers can serve as developmental indicators for the young beginner learners progressing from pre-attributive modifiers to post-phrasal and clausal modifiers.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Jiang et al. (2019) source
  • Classified as probably not a substantial claim.

    Premisecitation

    Lu (2011) found that syntactic complexity in argumentative essays, which need more causal reasoning, is higher than in narrative essays.

    “Lu (2011) found the syntactic complexity in argumentative essays which needed more causal reasoning are higher than that in narrative essays.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Lu (2011)

      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

    These types of modifiers can be included in the basic list of grammatical modifiers.

    “According to Vyatkina et al. (2015), these types of modifiers can be included in the basic list of grammatical modifiers.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Vyatkina et al. (2015) source
  • Classified as probably not a substantial claim.

    Premisecitation

    Vyatkina et al. (2015) investigated the written output in the writing of English of beginner learners of German using seven indicators: ADJA, CARD, ADJP, ADV, PREP, SUB, and REL.

    “Vyatkina et al. (2015) investigated the written output in the writing of English of beginner learners of German using seven indicators an adjective placed before a noun, ordinal numerals are indicated (ADJA), cardinal numeral (CARD), predicative adjective, adverbial adjective (ADJP), adverbs (ADV), prepositional phrases (PREP), subordinate (SUB), and relative clause (REL).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Vyatkina et al. (2015) source
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    Complexity can be viewed as an index of language development and progress, and as a valid and basic descriptor of second language performance in L2 research.

    “Bulté and Housen (2014) have stated that complexity can be viewed as an index of language development and progress, being treated as a valid and basic descriptor of second language performance in L2 research.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Bulté and Housen (2014) source
  • The quote only partly states this claim.

    Study design and conductown data

    The interrater reliability for the manual annotation of the seven types of modifiers in the corpus, measured by Cohen's kappa, was 0.91.

    “The interrater reliability was measured by using Cohen’s kappa, which had the value 0.91”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    Children's language development is the product of the interaction between their innate psychological cognitive ability and objective experience.

    “Children’s language development is the product of the interaction between their innate psychological cognitive ability and objective experience.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Piaget (1997)

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

  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductnone given

    The daily diary represented completely natural English output spontaneously written without any time limit, without any given topic, and word limit.

    “The daily diary represented the completely natural English output spontaneously written without any time limit, without any given topic, and word limit.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationown data

    During the observation period, a competitive relation occurs between ADJA and ADJP subsystems, such that growth of ADJA is usually accompanied by a decrease in the usage of ADJP.

    “During the observation period, a competitive relation occurs between ADJA and ADJP subsystems.”
    • Also stated in: § Fine-grained measures · plain
      “That is, the growth of ADJA is usually accompanied by a decrease in the usage of ADJP.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    The interaction between Alice's life experience and her psychological cognitive ability directly encodes experience into word representations, enriching sentence expression and leading to an increase in the length of sentences and clauses.

    “Owing to the interaction between Alice’s own life experience and her psychological cognitive ability, it is directly encoded into her thinking and is transformed from experience into word representations; thus the sentence expression is enriched, and an increase in the length of sentences and clauses can be observed.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    Piaget (1997) emphasized the relationship between children's language development and their active experiences in his theory of cognitive development.

    “Piaget (1997) emphasized the relationship between children’s language development and their active experiences in his theory of cognitive development.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Piaget (1997)

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

  • May combine two claims.

    Interpretationown data

    Both the global measures of syntactic complexity, MLS, MLT, DC/T, and CN/C, and the more specific indices of syntactic modifiers, ADJP, ADJA, ADV, SUB, and PREP, can capture the syntactic development changes of the beginner level learners.

    “Based on the above correlation analysis, it was found that both the global measures of syntactic complexity, MLS, MLT, DC/T, and CN/C, and the more specific indices of syntactic modifiers, ADJP, ADJA, ADV, SUB, and PREP, can capture the syntactic development changes of the beginner level learners.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    In case of insufficient input, the MLC system failed to get out of the attractor states with fluctuations; thus, the whole development appeared stable.

    “In case of insufficient input, the MLC system failed to get out of the attractor states with fluctuations; thus, the whole development appeared stable.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Chinese primary school English curriculum is limited to the alphabet and simple daily communication.
    • Rests on an assumption: Chinese primary school students are not required to do writing work as part of school learning.
    • Rests on an assumption: Chinese English classes have limited teaching hours and there is very limited access to the target language outside the classroom.
  • May combine two claims.

    Premisecitation

    The use of adverbs is a strong discriminator of different proficiency levels or indicator of language development.

    “The use of adverbs is a strong discriminator of different proficiency levels or indicator of language development”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Jiang et al. (2019) source
  • May combine two claims.

    Premisecitation

    Some subsystems in dynamic systems support each other while others compete for limited resources, and the development of one leads to the retreat of the other.

    “Some subsystems support each other while others compete for limited resources, and the development of one leads to the retreat of the other (Van Geert, 1991).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Van Geert, 1991 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationcitation

    The finding is in line with Yang et al. (2015), who found that topic had a significant effect on syntactic complexity features.

    “This is also in line with the results reported by Yang et al. (2015), who found that topic had a significant effect on syntactic complexity features.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Yang et al. (2015) source
  • May combine two claims.

    Interpretationown data

    Alice's usage of basic English syntactic structures was reduced while more varied syntactic structures were gradually increasing during the dynamic developmental process.

    “indicating that the participant’s usage of basic English syntactic structures was reduced while more varied syntactic structures were gradually increasing in the dynamic developmental process.”
    Quote in the paperSubstantial claim
40 of 40
  • The paper relies on this without support.

    Adolescents constitute the main body of beginner and intermediate learners.

    “Adolescents constitute the main body of beginner and intermediate learners”
  • The paper relies on this without support.

    Adolescents differ from adult learners in cognition and emotions.

    “and are surely different from adult learners in their cognition and emotions.”
  • The paper relies on this without support.

    Empirical studies on the development in writing of L2 young learners based on Dynamic Systems Theory are rare.

    “empirical studies on the development in writing of L2 young learners based on DST are rare.”
  • The paper relies on this without support.

    German and English are similar and both belong to the Indo-European language family.

    “Considering the similarity between the German and English language, and as both belong to the Indo-European language family”
  • The paper relies on this without support.

    The eight syntactic complexity indices obtained from L2SCA validly measure syntactic complexity in English writing.

    “Eight syntactic complexity indices for each written text file were obtained and an Excel file of the data was prepared.”
  • The paper relies on this without support.

    Alice's elementary school English learning was restricted to simple sentences and did not include practice with clauses.

    “As a beginner English learner, Alice’s classroom English learning in elementary school was restricted to simple sentences, with no practice of clauses”
  • The paper relies on this without support.

    Chinese primary school English curriculum is limited to the alphabet and simple daily communication.

    “Although Chinese students start English learning at the primary school, the English curriculum is actually limited to the alphabet and simple daily communication.”
  • The paper relies on this without support.

    Chinese primary school students are not required to do writing work as part of school learning.

    “They are not required to do writing work as part of school learning.”
  • The paper relies on this without support.

    Chinese English classes have limited teaching hours and there is very limited access to the target language outside the classroom.

    “Furthermore, limited teaching hours are devoted to English classes in the weekly teaching schedule and there is very limited access to the target language outside the classroom.”
  • The paper relies on this without support.

    Elementary school English instruction in China does not include relative clauses.

    “due to the absence of corresponding classroom input of relative clauses in the elementary school in China”
  • The paper relies on this without support.

    Numerals are mostly used in descriptive writing such as science and technology.

    “Numerals are mostly used in descriptive writing such as science and technology.”
  • The paper relies on this without support.

    Different genres and topics can cause differences in syntactic complexity.

    “different genres and topics can cause differences in syntactic complexity”
12 of 12

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Phrasal measures use different denominators

    Major

    Table 1 defines CP/C and CN/C per clause, but the Metrics text describes the two selected phrasal measures as CP/T and CN/T, per T-unit. These are different measures.

  • A correlation called moderate exceeds the stated strong threshold

    Minor

    The SUB-DC/T correlation of 0.654 is included among correlations called moderate, although the paper defines correlations greater than 0.650 as strong.

  • The second purported 7-day period spans eight dates

    Minor

    The text says entries were combined into 7-day periods, but its example for week 2 runs from January 8 through January 15, an inclusive span of eight days.

  • PREP-MLT correlation is reported with two values

    Minor

    The same correlation label, rprep-mlt, is assigned both 0.705 and 0.544 in successive sentences. At least one reported correlation value or label is wrong.

4 of 4

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Hou, 2019, A diachronic study on the development trajectory of English writing ability of Chinese engineering college students., Chin. J. Foreign Lang., 16, 62
  2. Piaget, 1997, Principles of Generative Epistemology.

Cited by

Sorted by citations

Authors
Wang, Z.
Affiliations
Ocean University of China (CN)
Corresponding author
Wang, Zhihong
Venue
Frontiers in Psychology
Published
2022-08-09
Volume
13
Pages
974481-974481
ISSN
1664-1078 (ISSN-L)
OpenAlex
W4290759694
Cited by
5
References
20
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 2
FWCI
3.76
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Psychology (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Shandong Office of Philosophy and Social Science
Topics
  • Social Sciences › Arts and Humanities › Language and Linguistics › EFL/ESL Teaching and Learning
  • Social Sciences › Psychology › Developmental and Educational Psychology › Second Language Acquisition and Learning
  • Social Sciences › Psychology › Developmental and Educational Psychology › Language Development and Disorders
Keywords
syntactic complexity, second language writing, Chinese learners of English, young learners, developmental trajectories, dynamical systems theory, relative clauses, prepositional phrases, adverbs, spiral development

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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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Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-19.

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Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

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