CHC Theory (2009) article hits 2000+ citations. Thanks.

2005 citations since 2009!!!!!

On occasion I check my Google Scholar profile.  Yesterday I was pleased to see that my most frequently cited peer-reviewed journal article (CHC theory and the human cognitive abilities project: Standing on the shoulders of the giants of psychometric research—Intelligence) had achieved the 2000+ (n=2005) total reference citations mark.  This clearly has been my most important peer-reviewed journal contribution to the field of intelligence and human cognitive abilities.

Thanks to all who have found the article useful.  And a special thanks to Dr. Doug Detterman.  After making an ISIR presentation about this topic, Doug, who was then the editor of Intelligence, invited me to submit an article.

Click on images to enlarge for easy reading

Redesigned and awesome ISIR (International Society for Intelligence Research) web page

It had been a while since I visited the ISIR web page.  I checked today and see that it has been completely redesigned.  It is AWESOME.  For those serious about human intelligence research, ISIR is THE professional organization one needs to join.  I have attended a couple of their conferences and they are top notch.  I hope to attend the 2015 conference in Sept.

McGrew (2009) CHC article in "Intelligence" most cited article in journal since 2009

This is a shameless plug. An invited editorial I published in the journal Intelligence is now the number one cited article, since 2009. I believe this is a solid indicator that the CHC model of intelligence is now the most prominent psychometric model of intelligence and is in the mainstream of intelligence research. My mom and dad should be proud. Click here to review or download.

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Top Intelligence articles 1977-2007

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Annual Intelligence Conference: ISIR 2012

Registration and call for papers for the annual International Society for Intelligence Scholars (ISIR) is now open. Click here to go to ISIR home page where links to this info is available.



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www.themindhub.com

Let the data speak. McGrew (2009) CHC intelligence article #6 most cited in journal Intelligence

I was just doing some fun web browsing at the journal web site for the most prestigious journal in the field of intelligence (Intelligence) and was pleasantly surprised to see that my 2009 invited editorial is currently among the most cited articles in the journal (#6), and was #12 in the most read articles. Damn....this makes my day. Thanks to all who have read and cited it. This will make my mom and dad proud.

CHC theory and the human cognitive abilities project: Standing on the shoulders of the giants of psychometric intelligence research. Intelligence, Volume 37, Issue 1, January 2009, Pages 1-10, McGrew, K.S.

Abstract

During the past decade the Cattell-Horn Gf-Gc and Carroll Three-Stratum models have emerged as the consensus psychometric-based models for understanding the structure of human intelligence. Although the two models differ in a number of ways, the strong correspondence between the two models has resulted in the increased use of a broad umbrella term for a synthesis of the two models (Cattell-Horn-Carroll theory of cognitive abilities-CHC theory). The purpose of this editorial is three-fold. First, I will describe the CHC framework and recommend that intelligence researchers begin using the CHC taxonomy as a common nomenclature for describing research findings and a theoretical framework from which to test hypotheses regarding various aspects of human cognitive abilities. Second, I argue that the emergence of the CHC framework should not be viewed as the capstone to the psychometric era of factor analytic research. Rather, I recommend the CHC framework serve as the stepping stone to reinvigorate the investigation of the structure of human intelligence. Finally, the Woodcock-Muñoz Foundation Human Cognitive Abilities (HCA) project, which is an evolving, free, on-line electronic archive of the majority of datasets analyzed in Carroll's (1993) seminal treatise on factor analysis of human cognitive abilities, is introduced and described. Intelligence scholars are urged to access the Carroll HCA datasets to test and evaluate structural models of human intelligence with contemporary methods (confirmatory factor analysis). In addition, suggestions are offered for linking the analysis of contemporary data sets with the seminal work of Carroll. The emergence of a consensus CHC taxonomy and access to the original datasets analyzed by Carroll provides an unprecedented opportunity to extend and refine our understanding of human intelligence. © 2008 Elsevier B.V. All rights reserved.

Latest issue of journal "Intelligence" is now out

Below is the list of articles in the latest edition of the journal Intelligence, the official journal of ISIR.

Danner, D., Hagemann, D., Schankin, A., Hager, M., & Funke, J. (2011). Beyond IQ: A latent state-trait analysis of general intelligence, dynamic decision making, and implicit learning. Intelligence, 39(5), 323-334.

Facon, B., Magis, D., Nuchadee, M. L., & DeBoeck, P. (2011). Do Raven's Colored Progressive Matrices function in the same way in typical and clinical populations? Insights from the intellectual disability field. Intelligence, 39(5), 281-291.

Frey, M. C. (2011). The relationship between performance in near match-to-sample tasks and fluid intelligence. Intelligence, 39(5), 273-280.

Hassall, C., & Sherratt, T. N. (2011). Statistical inference and spatial patterns in correlates of IQ. Intelligence, 39(5), 303-310.

Hill, D., Saville, C. W. N., Kiely, S., Roberts, M. V., Boehm, S. G., Haenschel, C., & Klein, C. (2011). Early electro-cortical correlates of inspection time task performance. Intelligence, 39(5), 370-377.

Johnson, W. (2011). Correlation and explaining variance: To square or not to square? Intelligence, 39(5), 249-254.

Johnson, W., & Deary, I. J. (2011). Placing inspection time, reaction time, and perceptual speed in the broader context of cognitive ability: The VPR model in the Lothian Birth Cohort 1936. Intelligence, 39(5), 405-417.

Kagitcibasi, C., & Biricik, D. (2011). Generational gains on the Draw-a-Person IQ scores: A three-decade comparison from Turkey. Intelligence, 39(5), 351-356.

Kan, K. J., Kievit, R. A., Dolan, C., & vanderMaas, H. (2011). On the interpretation of the CHC factor Gc. Intelligence, 39(5), 292-302.

Kaufman, S. B., DeYoung, C. G., Reis, D. L., & Gray, J. R. (2011). General intelligence predicts reasoning ability even for evolutionarily familiar content. Intelligence, 39(5), 311-322.

Keith, T. Z., Reynolds, M. R., Roberts, L. G., Winter, A. L., & Austin, C. A. (2011). Sex differences in latent cognitive abilities ages 5 to 17: Evidence from the Differential Ability Scales-Second Edition. Intelligence, 39(5), 389-404.

Major, J. T., Johnson, W., & Bouchard, T. J. (2011). The dependability of the general factor of intelligence: Why small, single-factor models do not adequately represent g. Intelligence, 39(5), 418-433.

Pesonen, A. K., Raikkonen, K., Kajantie, E., Heinonen, K., Henriksson, M., Leskinen, J., Osmond, C., Forsen, T., Barker, D. J. P., & Eriksson, J. G. (2011). Intellectual ability in young men separated temporarily from their parents in childhood. Intelligence, 39(5), 335-341.

Preckel, F., Wermer, C., & Spinath, F. M. (2011). The interrelationship between speeded and unspeeded divergent thinking and reasoning, and the role of mental speed. Intelligence, 39(5), 378-388.

Reeve, C. L., & Bonaccio, S. (2011). On the myth and the reality of the temporal validity degradation of general mental ability test scores. Intelligence, 39(5), 255-272.

Ruiz, P. E. (2011). Building and solving odd-one-out classification problems: A systematic approach. Intelligence, 39(5), 342-350.

Templer, D. I. (2011). Dysgenics: Genetic Deterioration in Modern Populations, by R. Lynn. Intelligence, 39(5), 434-435.

Vock, M., Preckel, F., & Rolling, H. (2011). Mental abilities and school achievement: A test of a mediation hypothesis. Intelligence, 39(5), 357-369.

Woodley, M. A. (2011). Problematic constructs and cultural-mediation: A comment on Heaven, Ciarrochi and Leeson (2011). Intelligence, 39(5), 245-248.

ISIR 2009 conference papers summary

Thanks to Bob Williams for sending me a link to the papers presented at the annual 2009 ISIR (International Society for Intelligence Research) conference held this past December in Madrid, Spain.  I was unable to attend ISIR this past year and very much missed the conference----clearly the best conference re: state-of-the-art research on human intelligence.  I plan to restart my regular attendance in 2010.

Technorati Tags: psychology, educational psychology, school psychology, forensicy psychology, cognition, intelligence, IQ, IQ tests, IQ scores, ISIR, IQs Corner

IQ Pipeline 2-14-10: Articles "in press" in journal Intelligence

"In press" in Intelligence.

Wayne Silverman, Charles Miezejeski, Robert Ryan, Warren Zigman, Sharon Krinsky-McHale, Tiina Urv, Stanford-Binet and WAIS IQ differences and their implications for adults with intellectual disability (aka mental retardation), Intelligence, In Press, Corrected Proof, Available online 25 January 2010, ISSN 0160-2896, DOI: 10.1016/j.intell.2009.12.005.
(http://www.sciencedirect.com/science/article/B6W4M-4Y7NJN8-1/2/c34f481640abfc9768fd15b536ddb286)
Keywords: Intellectual disability; Intelligence testing; IQ

Nash Unsworth, Interference control, working memory capacity, and cognitive abilities: A latent variable analysis, Intelligence, In Press, Corrected Proof, Available online 8 January 2010, ISSN 0160-2896, DOI: 10.1016/j.intell.2009.12.003.
(http://www.sciencedirect.com/science/article/B6W4M-4Y41MM1-2/2/e49b1ebc9322dc2e14ada20d86ee64ac)
Keywords: Interference control; Working memory capacity; Intelligence

Scott Barry Kaufman, Colin G. DeYoung, Jeremy R. Gray, Jamie Brown, Nicholas Mackintosh, Corrigendum to 'Associative learning predicts intelligence above and beyond working memory and processing speed' [Intelligence 37 (2009) 374-382], Intelligence, In Press, Corrected Proof, Available online 8 January 2010, ISSN 0160-2896, DOI: 10.1016/j.intell.2009.12.001.
(http://www.sciencedirect.com/science/article/B6W4M-4Y41MM1-1/2/8436cde374e503e5871a0f5ca0dc96b3)

J. Philippe Rushton, Arthur R. Jensen, The rise and fall of the Flynn Effect as a reason to expect a narrowing of the Black-White IQ gap, Intelligence, In Press, Corrected Proof, Available online 6 January 2010, ISSN 0160-2896, DOI: 10.1016/j.intell.2009.12.002.
(http://www.sciencedirect.com/science/article/B6W4M-4Y3K157-2/2/6f6533194b568822fa86c8a3594eeb38)

Charlie L. Reeve, Debra Basalik, Average state IQ, state wealth and racial composition as predictors of state health statistics: Partial support for `g' as a fundamental cause of health disparities, Intelligence, In Press, Corrected Proof, Available online 6 January 2010, ISSN 0160-2896, DOI: 10.1016/j.intell.2009.11.009.
(http://www.sciencedirect.com/science/article/B6W4M-4Y3K157-1/2/ee92f5b8e0180d6055bd2d8ecfc04d13)
Keywords: Cognitive epidemiology; Intelligence; State IQ; Racial disparities; Health outcomes

Wendy Johnson, Caroline E. Brett, Ian J. Deary, Intergenerational class mobility in Britain: A comparative look across three generations in the Lothian Birth Cohort 1936, Intelligence, In Press, Corrected Proof, Available online 31 December 2009, ISSN 0160-2896, DOI: 10.1016/j.intell.2009.11.010.
(http://www.sciencedirect.com/science/article/B6W4M-4Y29SYN-1/2/9c9df59d0004d41e032515e8c2b6e19b)
Abstract: 
Keywords: Social class mobility; Childhood IQ; Education; Social class

Heath A. Demaree, Kevin J. Burns, Michael A. DeDonno, Intelligence, but not emotional intelligence, predicts Iowa Gambling Task performance, Intelligence, In Press, Corrected Proof, Available online 31 December 2009, ISSN 0160-2896, DOI: 10.1016/j.intell.2009.12.004.
(http://www.sciencedirect.com/science/article/B6W4M-4Y29SYN-2/2/270b06531fbc29d924bc55137b49aa81)
Keywords: Intelligence; Emotional intelligence; Iowa Gambling Task; Decision-making; Emotion; Cognition

Richard Lynn, D.L. Robinson, Brain, Mind and Behaviour: A New Perspective on Human Nature (Second ed), Pontoon Publications, Dundalk, Ireland (2009) ISBN 978-0-9561812-0-6., Intelligence, In Press, Corrected Proof, Available online 14 December 2009, ISSN 0160-2896, DOI: 10.1016/j.intell.2009.11.007.
(http://www.sciencedirect.com/science/article/B6W4M-4XXNV69-1/2/6c5bed130ff12385beaa38fe7f55497e)

Technorati Tags: psychology, school psychology, educational psychology, neuropsychology, cognition, cognitive abilities, intelligence, IQ, IQ tests, IQ scores, ISIR, IQs Corner

IQ test selection could be life-or-death decision: WAIS v SB score differences in ID/MR sample

Interesting article "in press" in Intelligence that compares WAIS and Stanford Binet IQ scores (across different editions except the current SB5 and WAIS-IV) for adults with intellectual disability (ID/MR).  Although the mixing together of scores across different editions makes it impossible to make SB/WAIS-specific edition comparisons, the finding that the WAIS scores were, on the average (mean), almost 17 points higher may surprise many psychologists.  The authors discuss the real-life implications (i.e., Atkins ID death penalty decisions; eligibility for SS benefits, etc.) of different scores from different tests.  As outlined in a prior IAP AP101 special report, differences of this magnitude between different IQ tests should not be surprising. 

Silverman, W., Miezejeski, C., Ryan, R., Zigman, W., Krinsky-McHale & Urv, T. (in press).  tanford-Binet and WAIS IQ differences and their implications for adults with intellectual disability (aka mental retardation).  Intelligence.

Abstract

Stanford-Binet and Wechsler Adult Intelligence Scale (WAIS) IQs were compared for a group of 74 adults with intellectual disability (ID). In every case, WAIS Full Scale IQ was higher than the Stanford-Binet Composite IQ, with a mean difference of 16.7 points. These differences did not appear to be due to the lower minimum possible score for the Stanford-Binet. Additional comparisons with other measures suggested that the WAIS might systematically underestimate severity of intellectual impairment. Implications of these findings are discussed regarding determination of disability status, estimating prevalence of ID, assessing dementia and aging-related cognitive declines, and diagnosis of ID in forensic cases involving a possible death penalty.

A concluding comment from the authors

Nevertheless, psychologists cannot meet their ethical obligations in these cases without knowing which test provides the most valid estimate of true intelligence. The present data for individuals with relatively higher IQs, though sparse, indicate that differences between the Stanford-Binet and WAIS IQ tests can no longer be summarily dismissed as merely reflecting the scales' different floors. When test results are informing judgments of literal life and death, any suspected uncertainty regarding the validity of outcomes must be addressed aggressively.

Article Outline

1. Method
2. Results
3. Discussion

• 3.1. Disability determinations
• 3.2. Prevalence of ID
• 3.3. Declines with aging
• 3.4. Death penalty cases
• 3.5. Conclusion

Acknowledgements
References

Technorati Tags: psychology, educational psychology, school psychology, forensic psychology, court decisions, criminal psychology, criminal defense, Atkins cases, MR, ID, mental retardation, intellectual disability, death penalty, capital punishment, IQ, IQ scores, ABA, American Bar Association, ISIR, psychology and law, WAIS, Wechsler batteries, Stanford Binet, SB

ISIR journal Intelligence: Vol 38 (1), 2010

The latest and greatest from ISIR's journal Intelligence.

Beier, M. E., Campbell, M., & Crook, A. E. (2010). Developing and demonstrating knowledge: Ability and non-ability determinants of learning and performance. Intelligence, 38(1), 179-186.

Goldhammer, F., Rauch, W. A., Schweizer, K., & Moosbrugger, H. (2010). Differential effects of intelligence, perceptual speed and age on growth in attentional speed and accuracy. Intelligence, 38(1), 83-92.

Johnson, W., Brett, C. E., & Deary, I. J. (2010). The pivotal role of education in the association between ability and social class attainment: A look across three generations. Intelligence, 38(1), 55-65.

Kristensen, P., & Bjerkedal, T. (2010). Educational attainment of 25 year old Norwegians according to birth order and gender. Intelligence, 38(1), 123-136.

Luo, D. S., Chen, G. P., Zen, F. L., & Murray, B. (2010). Modeling working memory tasks on the item level. Intelligence, 38(1), 66-82.

Lynn, R. (2010). In Italy, north-south differences in IQ predict differences in income, education, infant mortality, stature, and literacy. Intelligence, 38(1), 93-100.

Lynn, R., & Meisenberg, G. (2010). The average IQ of sub-Saharan Africans: Comments on Wicherts, Dolan, and van der Maas. Intelligence, 38(1), 21-29.

Pesta, B. J., McDaniel, M. A., & Bertsch, S. (2010). Toward an index of well-being for the fifty US states. Intelligence, 38(1), 160-168.

Roivainen, E. (2010). European and American WAIS III norms: Cross-national differences in performance subtest scores. Intelligence, 38(1), 187-192.

Schoon, I., Cheng, H., Gale, C. R., Batty, G. D., & Deary, I. J. (2010). Social status, cognitive ability, and educational attainment as predictors of liberal social attitudes and political trust. Intelligence, 38(1),
144-150.

Song, L. J., Huang, G. H., Peng, K. Z., Law, K. S., Wong, C. S., & Chen, Z. J. (2010). The differential effects of general mental ability and emotional intelligence on academic performance and social interactions. Intelligence, 38(1), 137-143.

Steinmayr, R., Beauducel, A., & Spinath, B. (2010). Do sex differences in a faceted model of fluid and crystallized intelligence depend on the method applied? Intelligence, 38(1), 101-110.

Sturgis, P., Read, S., & Allum, N. (2010). Does intelligence foster generalized trust? An empirical test using the UK birth cohort studies. Intelligence, 38(1), 45-54.

Sundet, J. M., Eriksen, W., Borren, I., & Tamsb, K. (2010). The Flynn effect in sibships: Investigating the role of age differences between siblings. Intelligence, 38(1), 38-44.

Unsworth, N., Redick, T. S., Lakey, C. E., & Young, D. L. (2010). Lapses in sustained attention and their relation to executive control and fluid abilities: An individual differences investigation. Intelligence, 38(1), 111-122.

Vinogradov, E., & Kolvereid, L. (2010). Home country national intelligence and self-employment rates among immigrants in Norway. Intelligence, 38(1), 151-159.

vonStumm, S., Macintyre, S., Batty, D. G., Clark, H., & Deary, I. J. (2010). Intelligence, social class of origin, childhood behavior disturbance and education as predictors of status attainment in midlife in men: The Aberdeen Children of the 1950s study. Intelligence, 38(1), 202-211.

Wartenburger, I., Kuhn, E., Sassenberg, U., Foth, M., Franz, E. A., & vanderMeer, E. (2010). On the relationship between fluid intelligence, gesture production, and brain structure. Intelligence, 38(1), 193-201.

Wicherts, J. M., Dolan, C. V., & vanderMaas, H. L. J. (2010). The dangers of unsystematic selection methods and the representativeness of 46 samples of African test-takers. Intelligence, 38(1), 30-37.

Wicherts, J. M., Dolan, C. V., & vanderMaas, H. L. J. (2010). A systematic literature review of the average IQ of sub-Saharan Africans. Intelligence, 38(1), 1-20.

Wicherts, J. M., & Scholten, A. Z. (2010). Test anxiety and the validity of cognitive tests:

Technorati Tags: ISIR, intelligence, journal Intelligence, IQs Corner, cogniitve abilities, research, school psychology, educational psychology, individual differences, psychology, neuropsychology, cognition

WMF Human Cognitive Abilities (HCA) project update: 12-30-09 -- FREE data for secondary analysis!

The free on-line WMF Human Cognitive Abilities (HCA) archive project was updated today. An overview of the project, with a direct link to the archive, can be found at the Woodcock-Muñoz Foundation web page (click on "Current Woodcock-Muñoz Foundation Human Cognitive Abilities Archive") . Also, an on-line PPT copy of a poster presentation I made at the 2008 (Dec) ISIR conference re: this project can be found by clicking here.

After a period of inactivity (due to being swamped), I am pleased to announce the following additions and revisions.

Currently, 115 of Jack Carroll's original correlation matrices (in Excel file format) are now available at the archive. These correlation files can be downloaded for free and can be used for secondary data analysis. Of these 115, 75 also include the original manuscript which provides descriptive information regarding the variables in the correlation matrices. Finally, 59 of the 115 include the correlation matrices, original publication, and Carroll's official EFA results.  We continue to work hard to try to locate copies of old articles, missing files, etc.

Below are the additions and revisions to the archive for the current update.  The abbreviations used below are those used by Jack Carroll  in his 1993 book. A master index of these abbreviations and associated references can be found at the following link.

The following are new correlation matrices that are available:

• DETTOO
• DEVRO1
• DUNC11
• SATT11
• SAUN03
• SAUN11
• SCHE11
• SCHI01
• SCHI02
• SCHI11
• SCHI12
• SCHU01
• SCHU02

The original manuscript (dissertation) for FAUL11 has now been added to that dataset branch.

Errors in the variable names for REIN01, REIN02, REIN03, and REIN04 Excel correlation files have been fixed.

Happy holidays.


Technorati Tags: psychology, educational psychology, school psychology, neuropsychology, forensic psychology, cognition, intelligence, IQ, IQ tests, ISIR, factor analysis, human cognitive abilities, WMF, HCA

Another Atkins MR death penalty case mired in a psychometric quagmire of issues

Yet another psychometric quagmire of issues in a recent (October 7, 2009) Atkins MR death penalty case.  Many IQ-related issues raised, as well as assessment of adaptive behavior.  See extended post at sister blog--ICDP.

Technorati Tags: psychology, school psychology, educational psychology, neuropsychology, forensic psychology, Atkins case, MR, mental retardation, intellectual disability, IQ tests, IQ scores, intelligence, adaptive behavior, AAIDD, SSSQ, CAST-MR, death penalty, capital punishment, psychometrics

IQ profile variability and MR Dx: Life or death issues

Readers of IQs Corner will likely find the guest post, by Dr. Dale Watson, a clinical forensic neuropsychologist, regarding the intelligence test interpretation issues in a recent Atkins IQ MR death penalty decision of interest. It can be viewed at IQs Corner sister blog - Intellectual Competence and the Death Penalty

Technorati Tags: psychology, forensic psychology, criminal psychology, school psychology, educational psychology, MR, mental retardation, Atkins cases, death penalty, capital punishment, IQ, IQ tests, intelligence, general intelligence

Did US 5th Circuit Court of Appeals use vodoo IQ score in Atkins MR death penalty case?

Very interesting (puzzling) death penalty case decided on creative averaging of three IQ scores spanning decades.  Check it at sister blog.

Technorati Tags: psychology, forensic psychology, neuropsychology, criminal justice, criminal psychology, IQ, IQ tests, IQ scores, Atkins case, MR, mental retardation, death penalty, capital punishment

Why can IQ scores can differ: Applied Psychometrics 101 Report #1--Understanding global IQ test correlations

Announcing Applied Psychometrics 101: IQ Score Difference Series--#1 Understanding global IQ test correlations. (click here to view and/or download)

Toady I'm announcing the first in what I hope is a series of applied psychometric brief reports. The goal of this project is to explain basic psychometric issues to help professionals and the public better understand psychological measurement, IQ testing, etc. Above is the title of the first report (and a link where it can be accessed). Below is the abstract, followed by a few comments. This report (and future reports) are accessible via a section [(Applied Psychometric 101 (AP101) Reports] on the side bar of this blog.

Abstract

Despite reported evidence of strong concurrent correlations among IQ tests (concurrent validity), different IQ tests often produce different IQ scores for the same individual. This may be due to a number of factors. Prior to discussing the various factors, one must first understand the basic language of typical IQ-IQ comparison research. In the first of this series, IQ-IQ test correlations are explained. Statistically significant high correlations between different IQ tests, although providing strong concurrent validity evidence for tests, do not guarantee similar or identical IQ scores for all individuals tested.

Blogmaster comments

I've made a much longer series of comments regarding the questions and issues raised by this report as it relates to Atkins IQ MR death penalty cases at IQs Corner sister blog--Intellectual Competence and the Death Penalty. Visit it if you want more to think about.

Technorati Tags: psychology, school psychology, educational psychology, neuropsychology, forensic psychology, developmental psychology, special education, developmental disabilities, mental retardation, MR, AAMR, AAIDD, Atkins cases, IQ, IQ tests, IQ scores, intelligence, IQ score differences, ISIR

WMF Human Cognitive Abilities (HCA) project update: 9-11-09

The free on-line WMF Human Cognitive Abilities (HCA) archive project was updated today. An overview of the project, with a direct link to the archive, can be found at the Woodcock-Muñoz Foundation web page (click on "Current Woodcock-Muñoz Foundation Human Cognitive Abilities Archive") . Also, an on-line PPT copy of a poster presentation I made at the 2008 (Dec) ISIR conference re: this project can be found by clicking here.


Today's update added the following 10 new datasets from John "Jack" Carroll's original collection.

• Davis, F.B. (1944). Fundamental factors of comprehension in reading. Psychometrika, 9, 185-197.

• Davis, P.C. (1956). A factor analysis of the Wechsler-Bellevue scale. Educational & Psychological Measurement, 16, 127-146.

• **Day, R. (1980). Unpublished study of the Language-bound effect.

• de Mille, R. (1962). Intellect after lobotomy in schizophrenia: A factor-analytic study. Psychological Monographs, 76 (16, Whole No. 535). [ADI Document 7260]

• Denton, J.C., Taylor, C.W. (1955). A factor analysis of mental abilities and personality traits. Psychometrika, 20, 75-81.

• DuBois, P.H. (1932). A speed factor in mental tests. Archives of Psychology, 22 (Whole No. 141).

• **Dupont, J-B., Gendre, F., Pauli, L. (1975). Epreuves operatoires et tests factoriels classiques; Contribution a l'etude de la structure des aptitudes mentales drant l'adolescence. [Tests of operations and classic factorial tests; Contribution to the study of the structure of mental aptitudes during adolescence.] Revue Europeenne des Sciences Sociales et Cahiers Vilfredo Pareto, 13(No. 35), 137-198.

• Remondino, C. (1962). Recherche sur la signification du facteur numerique. [Research on the signification of the numerical factor.] Revue de psychologie Appliquee, 12, 63-81.

• Reyburn, H. A., Taylor, J. G. (1941). Some factors of intelligence. British Journal of Psychology, 31, 249-261.

• Reynolds, C. R. (1979). A factor analytic study of the Metropolitan Readiness Test. Contemporary Educational Psychology, 4, 315-317.

• Reynolds, C. R. (1980). Differential construct validity of a preschool battery for Blacks, Whites, males, and females. Journal of School Psychology, 18, 112-125.

Request for assistance: The HCA project needs help tracking down copies of old journal articles, dissertations, etc. for a number of datasets being archived. We have yet to locate copies of the original manuscripts for the datasets listed above that are designated with **. Help in locating copies of these MIA manuscripts would be appreciated.

Also, please visit he special "Requests for Assistance" section of this archive to view a list of manuscripts that we are currently having trouble locating. If you have access to either a paper or e-copy of any of the designated "fugitive" documents, and would be willing to provide them to WMF to copy/scan (we would cover the costs), please contact Dr. Kevin McGrew at the email address listed at the site.

Please join the WMF HCA listserv to receive routine email updates regarding the WMF HCA project.

All posts regarding this project can be found here.

Technorati Tags: psychology, educational psychology, cognitive, cognition, intelligence, neuropsychology, IQ, IQ tests, IQ scores, HCA, Human Cognitive Abilities, Woodcock-Munoz-Foundation, WMF, John Carroll, CHC, Cattell-Horn-Carroll, HCA project, correlation matrices

Controversy re: use of Mexican WAIS-III in MR Atkins cases

See post at sister blog Intellectual Competence and the Death Penalty.

Technorati Tags: psychology, school psychology, educational psychology, neuropsychology, developmental psychology, forensic psychology, MR, Atkins cases, SCOTUS, WAIS-III, Mexican WAIS-III, IQ tests, IQ scores, test norms, psychometrics

IQ tests, scores and MR death penalty ruling (April 2009)

April 2009 US District Court ruling demonstrates courts thinking regarding dueling expert opinions re: use of IQ tests, Flynn Effect and adaptive behavior in MR death penalty case (Atkin's cases).  Check it out at Intellectual Competence and the Death Penalty blog.

Technorati Tags: psychology, educational psychology, school psychology, neuropsychology, forensic psychology, clinical psychology, intelligence, cognition, IQ, IQ tests, IQ scores, MR, mental retardation, intellectual disability, AAIDD, AAMR, Atkins cases, SCOTUS

New IQ, MR and Death Penalty blog

IQ, MR and the death penalty.

Today I'm announcing a new blog projected related to the "life-and-death" (literally) issues surrounding Atkins cases...court cases dealing with the topic of mental retardation and the death penalty.  The blog has a specific focus on the intellectual competence (IQ) issues and research surrounding Atkin's cases.

Additional information can be found at Intellectual Competence and the Death Penalty blog.  The announcement statement can be viewed here.

Technorati Tags: psychology, educational psychology, school psychology, forensice psychology, criminal psychology, neuropsychology, developmental psychology, clinical psychology, Atkins cases, MR, mental retardation, IQ, IQ tests, IQ scores, death penalty, capital punishment, SCOTUS, intellectual competence