The DOI matches its Crossref record; 24 of the 27 references it cites were found in a registry or an index.
YOU CAN'T PLAY 20 QUESTIONS WITH NATURE AND WIN: PROJECTIVE COMMENTS ON THE PAPERS OF THIS SYMPOSIUM
Open accessOverview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“Understanding brain information processing requires that we build computational models that are capable of performing cognitive tasks.”
From Cognitive computational neuroscience (2018) · cites this paper as [1]
In the citing paper
“However, experiments will yield theoretical insight only when employed to test brain-computational models.”
From Cognitive computational neuroscience (2018) · cites this paper as [1]
In the citing paper
“Only synthesis in a computer simulation can reveal what the interaction of the proposed component mechanisms actually entails and whether it can account for the cognitive function in question.”
From Cognitive computational neuroscience (2018) · cites this paper as [1]
Citations
Cites
Receptive fields, binocular interaction and functional architecture in the cat’s visual cortex
Hubel, D. H., & Wiesel, T. N. (1962) · The Journal of Physiology · doi:10.1113/jphysiol.1962.sp006837 · Cited by 13,680
Human Memory: A Proposed System and its Control Processes
Atkinson, R. C., & Shiffrin, R. M. (1968) · Psychology of Learning and Motivation · doi:10.1016/s0079-7421(08)60422-3 · Cited by 7,216
Newell, A. (1972) · Cited by 6,222
Self-citationLane, S. D. (2016) · Routledge eBooks · doi:10.4324/9781315506173-8 · Cited by 4,707
Understanding natural language
Winograd, T. A. (1972) · Cognitive Psychology · doi:10.1016/0010-0285(72)90002-3 · Cited by 2,803
de Groot, A. D. (1978) · De Gruyter eBooks · doi:10.1515/9783110800647 · Cited by 1,888
(1971) · Medical Entomology and Zoology · Cited by 1,687
Brook, C. V., & Groot, A. D. D. (1966) · The American Journal of Psychology · doi:10.2307/1421155 · Cited by 1,295
On the process of comparing sentences against pictures
Clark, H. H., & Chase, W. G. (1972) · Cognitive Psychology · doi:10.1016/0010-0285(72)90019-9 · Cited by 1,130
Coding Processes in Human Memory.
Melton, A. W., & Martin, E. (1973) · The American Journal of Psychology · doi:10.2307/1421959 · Cited by 795
Cited by
Sorted by citations
Items 601–700 of 822
On Piecemeal Testing and The Possibility of Psychological SciencePreprint
Kellen, D., Pedersen, A. P., & Klauer, K. C. (2023) · PsyArXiv (OSF Preprints) · doi:10.31234/osf.io/89bkp · Cited by 2
The Idea of a Peculiarly Female Intelligence: A Brief History of Bias Masked as Science
Gigerenzer, G. (2022) · Intelligence in Context · doi:10.1007/978-3-030-92798-1_5 · Cited by 3
Social intelligence: How to integrate research? A mechanistic perspective
Miłkowski, M. (2017) · AI & Society · doi:10.1007/s00146-017-0787-3 · Cited by 2
“They both saw psychology as offering micro-theories, or theories of very limited scope, that did not contribute to a common view of the human mind [6].”
BackgroundThe Question of External Integration of Jurisprudence in the Context of its Political Character
Kotowski, A. (2019) · Studia Prawnicze / The Legal Studies · doi:10.37232/sp.4.4 · Cited by 1
Curtis, E. T., & Lebek, I. (2023) · Memory & Cognition · doi:10.3758/s13421-023-01449-9 · Cited by 1
“By utilizing a formal model with a broad and varied history of success, we follow in a tradition of moving away from theories that are restricted to a specific experimental procedure in favour of more comprehensive and unified theories of cognition (cf. Newell, 1973; Surprenant & Neath, 2009).”
Evolving Cognitive Models: A Novel Approach to Verbal Learning
Javed, N., Bennett, D., Bartlett, L., Lane, P. C. R., & Gobet, F. R. (2024) · IEEE International Conference on Cognitive Machine Intelligence (CogMI) · doi:10.1109/cogmi62246.2024.00037 · Cited by 1
“This may be misleading as such data may obscure patterns at the level of the individual participant (Gobet, 2017; Newell, 1973; Vanpaemel & Storms, 2008).”
Ji, Y., van Rij, J., & Taatgen, N. (2025) · Journal of Child Language · doi:10.1017/s0305000925100159 · Cited by 1
Finding Middle Ground in Cognitive Media Psychology
Huskey, R., & Schmälzle, R. (2025) · Oxford University Press eBooks · doi:10.1093/oxfordhb/9780197689875.013.0018 · Cited by 1
Individual Differences and Translational Science in the Design of Human-Centered Visualizations
Green, T. M., Arias‐Hernández, R., & Fisher, B. (2013) · Springer eBooks · doi:10.1007/978-1-4614-7485-2_4 · Cited by 1
Gamrad, D., & Söffker, D. (2010) · Conference proceedings/Conference proceedings - IEEE International Conference on Systems, Man, and Cybernetics · doi:10.1109/icsmc.2010.5641727 · Cited by 1
“The representational level is realized within a cognitive architecture, which simu lates human cognition from a phenomenological engineering oriented point of view and builds a unique framework (in reference to [11]) for the realization of cognitive functions.”
BackgroundThe 2011 Benjamin Franklin Medal in computer and cognitive science presented to John R. Anderson
Salvucci, D. D. (2013) · Journal of the Franklin Institute · doi:10.1016/j.jfranklin.2012.06.013 · Cited by 1
“Allen Newell (winner of the Franklin Institute’s Levy Medal in 1992), in a paper aptly titled ‘‘You Can’t Play 20 Questions With Nature And Win’’ [1], expressed concern about this state of affairs and wondered how the scientific community could better work toward more integrative theories.”
BackgroundKim, J. R., & Hancock, P. A. (2010) · Advances in human factors and ergonomics series · doi:10.1201/ebk1439835036-2 · Cited by 1
Veksler, V. D., Buchler, N., Lebiere, C. J., Morrison, D., & Kelley, T. D. (2016) · Biologically Inspired Cognitive Architectures · doi:10.1016/j.bica.2016.10.003 · Cited by 1
6. What grabs us: Comment on Ruz & Lupianez
Hommel, B. (2002) · Cited by 1
Radical cognitivism? Distinguishing behavior from thought.
MacLeod, C. M., & Risko, E. F. (2017) · Journal of Applied Research in Memory and Cognition · doi:10.1016/j.jarmac.2016.11.001 · Cited by 1
From Consciousness to Brain-Sign: a Neurobiological Reconstruction
Clapson, P. (2020) · Activitas Nervosa Superior · doi:10.1007/s41470-020-00076-y · Cited by 1
“Newell 1973; Kelso and Engstrøm 2006] and to adopt a vocabulary that views concepts as complementary pairs that mutually define each other and, critically, do not exclude each other ’ (2013, p. 5).”
Mathematical Linguistics and Cognitive Complexity
Santo, A. D., & Rawski, J. (2021) · Springer eBooks · doi:10.1007/978-3-030-44982-7_16-1 · Cited by 1
“…and ill-understood — i.e. employed without an understanding of what causal relations connect the way these models generalize from observed data to new predictions — there is little they actually contribute to the cognitive study of language (Newell, 1973; Kaplan, 1995; Martin and Baggio, 2019).”
BackgroundSallis, H., Smith, G. D., & Munafo, M. R. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.024 · Cited by 1
Self-Regulation and Control in Personality Functioning
Carver, C. S., & Scheier, M. F. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.029 · Cited by 1
Michon, J. A., & Akyürek, A. (1992) · Studies in cognitive systems · doi:10.1007/978-94-011-2426-3_1 · Cited by 1
Metanauka poznawcza: nowe podejście do badania teorii
Miłkowski, M. (2023) · Przegląd Psychologiczny · doi:10.31648/przegldpsychologiczny.9459 · Cited by 1
“Rzekomy kryzys rzetelności diagnostyki został poniekąd wyolbrzymiony, gdyż słynne badania Rosenhana (1973), który dowodził, że diagnozy w instytucjach psychiatrycznych są całkowicie arbitralne i przedwcze-sne, okazały się oszustwem naukowym (Cahalan, 2019; Scull, 2023).”
BackgroundDiCarlo, J. J., Yamins, D. L. K., Ferguson, M. E., Fedorenko, E. G., Bethge, M., Bonnen, T., & Schrimpf, M. (2023) · Behavioral and Brain Sciences · doi:10.1017/s0140525x23001607 · Cited by 1
Gobet, F. R. (2024) · L’Année psychologique · doi:10.3917/anpsy1.242.0215 · Cited by 1
The Whys and Hows of Theory—Comparing Cognitive Science and Economics
Rich, P. (2024) · Computational Brain & Behavior · doi:10.1007/s42113-024-00213-9 · Cited by 1
Berch, D. B. (2007) · Emerald Group Publishing Limited eBooks · doi:10.1108/978-1-60752-588-220251004 · Cited by 1
Preferring Rules to Similarity: Coherence, goals, and commitment
Pothos, E. M. (2005) · Behavioral and Brain Sciences · doi:10.1017/s0140525x05470016 · Cited by 1
Liu, Y. (2013) · Oxford University Press eBooks · doi:10.1093/oxfordhb/9780199757183.013.0031 · Cited by 1
Estes, S. L., Bonaceto, C. A., & Mills, S. H. (2009) · Cited by 1
The curious case of the self-refuting straw man: Trafimow and Earp’s response to Klein
Klein, S. B. (2016) · Theory & Psychology · doi:10.1177/0959354316648230 · Cited by 2
“Thus, it is a truism that, absent such a theory, an investigator cannot be sure of what is to be replicated (e.g., Newell, 1973).”
BackgroundWhat Has the Study of Digital Games Contributed to the Science of Expert Behavior?
Charness, N. H. (2017) · Topics in Cognitive Science · doi:10.1111/tops.12259 · Cited by 1
“Although he argued against an approach based solely on clever experiments that create bit-like advances in knowledge, Newell (1973) understood, appreciated, and advanced experimental science through simulation work.”
MethodMultiple representations in cognitive architectures
Peebles, D., & Cheng, P. (2017) · Huddersfield Research Portal (University of Huddersfield) · Cited by 1
Comparison of registration status of Institutional Taska services in East Coast Malaysia
Kharuddin, A. F., Mustafa, Z. B., Azid, N., Kharuddin, D., Ibrahim, K. F. K., Hong, L. Y., Mohmad, S. O. S., & Zahri, Z. A. (2019) · Southeast Asia Early Childhood Journal · doi:10.37134/saecj.vol8.no2.5.2019 · Cited by 1
Personality in Nonhuman Animals
Bell, A. M., & Bensky, M. K. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.023 · Cited by 1
Weiß, A., & Deary, I. J. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.005 · Cited by 2
Personality and the Unconscious
Perugini, M., Richetin, J., & Costantini, G. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.008 · Cited by 2
Podstawowe założenia badań empirycznych w prawoznawstwie - próba konfrontacji
Kotowski, A. (2017) · Studia Prawnicze / The Legal Studies · doi:10.37232/sp.2017.2.4 · Cited by 1
Where is the Trouble in Pseudo-empirical Research?
Byers, P. (2021) · Integrative Psychological and Behavioral Science · doi:10.1007/s12124-021-09631-x · Cited by 1
Stocco, A. (2021) · Journal of Cognition · doi:10.5334/joc.175 · Cited by 1
“In many ways, this problem is analogous to the one singled out by Newell (1973) in his “You can’t play twenty questions with nature and win” paper.”
MethodA Brief Survey on User Modelling in Human Computer Interaction
Biswas, P. (2013) · IGI Global eBooks · doi:10.4018/978-1-4666-4422-9.ch006 · Cited by 1
The Oxford Handbook of Memory Endel Tulving and Fergus Craik, Oxford University Press, 2000
Wagenmakers, E. (2001) · Acta Psychologica · doi:10.1016/s0001-6918(00)00065-2 · Cited by 1
Two types of thought: Evidence from aphasia
Davidoff, J. B. (2005) · Behavioral and Brain Sciences · doi:10.1017/s0140525x05290015 · Cited by 1
Breaking the myth that behaviorism is a trivial science
Rakover, S. S. (1986) · New Ideas in Psychology · doi:10.1016/0732-118x(86)90041-3 · Cited by 1
Concerning Hunt's new ways of assessing intelligence
Belmont, J. R. (1983) · Intelligence · doi:10.1016/0160-2896(83)90002-8 · Cited by 1
Schmalhofer, F. (2001) · Journal of Mathematical Psychology · doi:10.1006/jmps.2001.1381 · Cited by 1
A Cognition-Based Definition of Creativity and A Proposition for Approaching Creativity Artificially
Hedblom, M. M. (2013) · DiVA (Linkoping University) · Cited by 1
Task-centered research: understanding, augmenting and discovering managerial expertise
Prietula, M. J., Lawrence, S. R., & Greene, D. P. (2003) · Hawaii International Conference on System Sciences (HICSS) · doi:10.1109/hicss.1988.11990 · Cited by 1
Krawitz, A. (2007) · Deep Blue (University of Michigan) · Cited by 1
Children's Number-line Estimation Deconstructed
Piatt, C. (2014) · ERA: Education and Research Archive (University of Alberta) · doi:10.7939/r3rv0d82t · Cited by 1
A Methodology to Explore Empirical Evidence for a Macro Cognitive Architecture of Expertise
Nagy, N. (2017) · doi:10.22215/etd/2017-12143 · Cited by 1
“There is doubt, however, that this domain-specific approach can lead to a holistic explanation of expertise in the real world (see, Klein et al., 2003, Newell, 1973).”
BackgroundMethodInfluentialCognitive computational neurosciencePreprint
Kriegeskorte, N., & Douglas, P. K. (2018) · arXiv (Cornell University) · doi:10.48550/arxiv.1807.11819 · Cited by 1
“The argument in favor of task-performing computational models was well articulated by Allen Newell in his commentary “You can’t play 20 questions with nature and win” in 1973.(1) Newell was criticizing the state of cognitive psychology.”
BackgroundRiesterer, N., Brand, D., & Ragni, M. (2020) · arXiv (Cornell University) · doi:10.48550/arxiv.2003.05196 · Cited by 1
“nd assumptions into computationally tractable models, competing theories can be evaluated, progress in the understanding of a domain can be monitored, and finally, realworld applications can be solved [9]. The field of syllogistic reasoning has seen a rise of computational models. From initially only verbally described…”
Using ACT-R and SGOMS to Predict Micro Strategies Used by Experts During Routine Tasks
Greve, E. (2021) · doi:10.22215/etd/2021-14538 · Cited by 1
Corr, P. J., & Matthews, G. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.001 · Cited by 1
Addendum: Statistical Analyses and Computer Programming in Personality
Corr, P. J., & Matthews, G. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.045 · Cited by 1
Dynamically structured holographic memory : a hybrid of discrete and distributed representation
Rutledge-Taylor, M. F. (2011) · doi:10.22215/etd/2011-09665 · Cited by 1
Seana Coulson, A., & Matlock, T. (2005) · John Benjamins Publishing Company eBooks · doi:10.1075/hop.9.cog5 · Cited by 1
Fiction as AutobiographyPreprint
Yang, B. W. (2018) · Thesis Commons (OSF Preprints) · doi:10.31237/osf.io/th6j2 · Cited by 1
A critical appraisal of the Dual Process account of moral judgmentPreprint
Quinlan, P. T., & Cohen, D. J. (2023) · doi:10.31234/osf.io/62rgf · Cited by 1
Reed, S. K. (2020) · Oxford University Press eBooks · doi:10.1093/oso/9780197529003.002.0006 · Cited by 1
Whither developmental psycholinguistics?Preprint
Gomes, V. (2024) · PsyArXiv (OSF Preprints) · doi:10.31234/osf.io/zm57t · Cited by 1
How to Build an Observatory for the MindPreprint
Popov, V., & Oberauer, K. (2024) · doi:10.31234/osf.io/hmu9r · Cited by 2
Priest, L. (2014) · University of Huddersfield Repository (University of Huddersfield)
Interaction of Simulated Actors with the Environment
Gazendam, H. W. M. (2007) · Springer eBooks · doi:10.1007/978-1-4020-5837-0_6
New Requirements for Modelling How Humans Succeed and Fail in Complex Traffic Scenarios
Lüdtke, A. (2010) · Lecture notes in computer science · doi:10.1007/978-3-642-11750-3_1
“[30]).”
Wolff, J. G. (2012) · arXiv (Cornell University) · doi:10.48550/arxiv.1212.0229
“…And, although it is still very much a minority interest amongst researchers in artificial intelligence, there has in 10Both of them inspired by Allen Newell (eg, Newell, 1973). recent years been renewed interest in artificial intelligence as a whole (see, for example, Schmidhuber et al., 2011).”
BackgroundThe Role of Statistical And Formal Techniques in Experimental Psychology
Lories, G. (2002) · Springer eBooks · doi:10.1007/978-1-4020-4676-6_3
Rational Search of Associative Memory
Davelaar, E. J., Harbison, J. I., Yu, E. C., Hussey, E. K., & Dougherty, M. R. P. (2012) · BIROn (Birkbeck, University of London)
Processing of spatial information
Goetz, A. A. (1974) · doi:10.31274/rtd-180813-4269
“While the potential importance of spatial representational systems for thinking processes is recog nized, and while there are a number of highly ingenious stud ies investigating properties of spatial processing, this re search, as Newell (1973) notes, does not add up to a coherent interpretation.”
BackgroundBiographies [Obituary - Richard F. Clippinger: 1913-1997]
Lee, J. H. (1998) · IEEE Annals of the History of Computing · doi:10.1109/mahc.1998.667308
Is this what the debate on rules was about?
Hahn, U. (2005) · Behavioral and Brain Sciences · doi:10.1017/s0140525x05340015
An ecological approach to cognitive (im)penetrability
Withagen, R., & Michaels, C. F. (1999) · Behavioral and Brain Sciences · doi:10.1017/s0140525x99592029
Evolutionary Explanations In Psychology: A Paradigm For Integrating Psychology With Science
Ho, H.-Y. (2007) · UC Research Repository (University of Canterbury) · doi:10.26021/6964
Dougherty, M. R. P., & Thomas, R. P. (2008)
TARGET ARTICLE The possibility of a pluralist cognitive science
Dale, R. A. C. (2008)
Clinical neuropsychology and the left-hemisphere dominance for language
Gainotti, G. (1981) · Behavioral and Brain Sciences · doi:10.1017/s0140525x00007640
“To dichotomize in this rigid all-or-none fashion may well be a consequence of our tendency to exaggerate and catagorize continua in terms of their extremities (cf. Newell 1973).”
You Can't Play 20 Questions with Students and Win: How Assessment Can Fail Students and Staff
MacAndrew, S. B. G. (2004) · Psychology Learning & Teaching · doi:10.2304/plat.2003.3.2.85
For Problems Sufficiently Hard... AI Needs CogSci
Bringsjord, S., & Clark, M. H. (2014)
Understanding each other: Defining a conceptual space for cognitive modeling
West, R. L., & Leibovitz, D. P. (2012) · eScholarship (California Digital Library) · doi:10.13140/rg.2.1.2760.1128
Teildisziplinen der Kognitionswissenschaft
Egger, A., Sommer, V., Röttger‐Rössler, B., Bender, A., Huth, J., Schmid, U., Hertzberg, J., Hammer, B., Materne, F., Bosch, P., et al. (2013) · J.B. Metzler eBooks · doi:10.1007/978-3-476-05288-9_3
Its Origin and Future in Psychology
Bindra, D. (1984)
Henderson, L., & Moulden, B. (1979) · Perception · doi:10.1068/p080117
Hargreaves, I. S. (2014) · Libraries and Cultural Resources (University of Calgary) · doi:10.11575/prism/25428
Detecting Spatial Orientation Demands during Virtual Navigation using EEG Brain Sensing
Nguyen-Vo, T., DiPaola, S., & Riecke, B. E. (2017) · Summit (Simon Fraser University)
Is Psychology a Pseudoscience?
Rakover, S. S. (2019) · The American Journal of Psychology · doi:10.5406/amerjpsyc.132.3.0382
Fritz, H., Schaback, R., & zu Göttingen, A. D. W. (2019) · GRO · doi:10.17875/gup2019-1157
Cognitive Architectures Including ACT-R
Anderson, J. R. (2019) · doi:10.11225/jcss.26.295
Tut denken weh? Überlegungen zur Ökonomietendenz beim komplexen Problemlösen
Schoppek, W. (2020) · Springer eBooks · doi:10.1007/978-3-658-29906-4_23
The Neural Organization of Social Knowledge
Thornton, M. A. (2017) · Digital Access to Scholarship at Harvard (DASH) (Harvard University)
More problems in AI research and how the SP System may help to solve them
Wolff, J. G. (2020) · HAL
Computational and Mathematical Thinking
Reed, S. K. (2020) · Oxford University Press eBooks · doi:10.1093/oso/9780197529003.003.0019
Personality Assessment Methods
Boyle, G. J., & Helmes, E. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.011 · Cited by 1
Schermer, J. A., & Saklofske, D. H. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.014
Social Relations and Social Support
Austin, E. Q., Knack, J. M., Jensen‐Campbell, L. A., & Rex‐Lear, M. (2020) · Cambridge University Press eBooks · doi:10.1017/9781108264822.036
Cognitive Approaches to Human Computer Interaction
Yuan, H., Li, S., & Rusconi, P. (2020) · Human-computer interaction series · doi:10.1007/978-3-030-45704-4_2
Walker, C. (2020) · Springer eBooks · doi:10.1007/978-3-030-55769-0_4
The Question of External Integration of Jurisprudence in the Context of its Political Character.
Kotowski, A. (2019) · Studia Prawnicze / The Legal Studies · doi:10.37232/sp.2019.4.4
Extracting representations of cognition across neuroimaging studies improves brain decodingPreprint
Mensch, A., Mairal, J., Thirion, B., & Varoquaux, G. P. (2018) · arXiv (Cornell University) · doi:10.48550/arxiv.1809.06035 · Cited by 5
“This is fundamentally difficult as each cognitive study frames a particular question and resorts to specific task oppositions that seldom have any exact counterpart in other studies 14 .”
Background
Metadata
- Authors
- Newell, A.
- Affiliations
- Carnegie Mellon University (US)
- Corresponding author
- Newell, Allen
- Venue
- Visual Information Processing
- Publisher
- Elsevier
- Published
- 1973
- Pages
- 283-308
- OpenAlex
- W95274681
- Cited by
- 820
- References
- 27
- Citations by year
- 2026: 28 · 2025: 29 · 2024: 35 · 2023: 34 · 2022: 28 · 2021: 33 · 2020: 96 · 2019: 32 · 2018: 37 · 2017: 34 · 2016: 24 · 2015: 20 · 2014: 22 · 2013: 28 · 2012: 34
- FWCI
- 14.70
- Type
- book chapter
- Language
- en
- Open access
- green
- figshare.com
- Licence
- Locations
- Elsevier eBooks (publishedVersion)
- KiltHub Repository (submittedVersion)
- Figshare (submittedVersion, cc-by)
- KiltHub Repository
- Topics
- Social Sciences › Arts and Humanities › History and Philosophy of Science › Cybernetics and Technology in Society
- Social Sciences › Arts and Humanities › History and Philosophy of Science › Interdisciplinary Research and Collaboration
- Social Sciences › Business, Management and Accounting › Management of Technology and Innovation › Scientific Research and Philosophical Inquiry
About these checks
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.
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 ›
Are you an author, or do you see a problem with this page? Request a review