Monday, July 28, 2008

WMF Human Cognitive Abilities (HCA) archive project update 7-28-08

The free on-line WMF Human Cognitive Abilities (HCA) archive project was updated today. The major updates included the following:
  • A number of new datasets (correlation matrices analyzed in Carroll's 1993 factor analysis meta-analysis) and original journal articles were added to the archive
    • The HCA project needs help tracking down copies of old journal articles, dissertations, etc. for a number of datasets being archive. Please visit the "master bibliography/inventory" section of this archive and visit the on-line dataset/reference file. When viewing the on-line working inventory, manuscripts/references featured in the color red are those 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.
As of today, 60 of Jack Carroll's original correlation matrices are in various stages of archiving (approximately half are complete - i.e., they have both the correlation matrix and a PDF copy of the original publication available).

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

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Saturday, July 26, 2008

The paradox of choice

The paradox of choice has been an interesting topic of recent. An
article in SCIENTIFIC AMERICAN suggests that making too many choices
or decisions depletes limited thinking resources (executive functions)
with a subsequent drop off in quality of decisions as you make more.
You can read a brief summary at the blog link below which also
includes a link to the lengthier SA article.

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Friday, July 25, 2008

Recent Literature of Interest 7-25-08 (3 weeks worth)

I apologize for being largely MIA on my primary blog. I was traveling and then started suffering major back spasms that limited the time I could sit in a chair and do computer work. I've also been busy trying to finish of a journal manuscript.

Enough for the excuses.

This weeks recent literature of interest (actually for the past three weeks) can be found by clicking here, here, and here.

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Wednesday, July 23, 2008

Migraines explained

Thanks to MIND HACKS for providing a brief summary to the Scientific
American article that has been making the blogosphere rounds re: new
insights into the causes of migraines.

I used to suffer 10-12 of these a year and now am almost migraine
free. The article made sense to me as I used to explain my migraines
as being a major electrical storm in my head, that when done, gave me
a sense of if someone had hit a brain reset button and
shocked all my neurons back to a clean starting state.

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Tuesday, July 22, 2008

IQs Corner APA book nook 7-22-08

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A new issue of PsycCRITIQUES is available online.

July 23, 2008
Volume 53, Issue 30

Book Reviews
1. Commemorating Brown: The Social Psychology of Racism and Discrimination
Authors: Glenn Adams, Monica Biernat, Nyla R. Branscombe, Christian S. Crandall, and Lawrence S. Wrightsman (Eds.)
Reviewer: Chammie Austin

2. Gang Leader for a Day: A Rogue Sociologist Takes to the Streets
Author: Sudhir Venkatesh
Reviewer: Robert J. Sternberg

3. Social Anxiety Disorder
Authors: Martin M. Antony and Karen Rowa
Reviewer: Stefan G. Hofmann

4. Existential and Spiritual Issues in Death Attitudes
Authors: Adrian Tomer, Grafton T. Eliason, and Paul T. P. Wong (Eds.)
Reviewers: Louis Hoffman and Nathaniel Granger

5. A Therapist's Guide to EMDR: Tools and Techniques for Successful Treatment
Author: Laurel Parnell
Reviewer: Arnold R Bruhn

6. Maps of Narrative Practice
Author: Michael White
Reviewer: Paul T. P. Wong

7. Sociodrama and Collective Trauma
Author: Peter Felix Kellermann
Reviewer: David Manier

8. Promoting Self-Change From Addictive Behaviors: Practical Implications for Policy, Prevention, and Treatment
Authors: Harald Klingemann and Linda Carter Sobell (Eds.)
Reviewer: Hal Arkowitz

9. Rehabilitation: Beyond the Risk Paradigm
Authors: Tony Ward and Shadd Maruna
Reviewer: Jerome D. Schein

10. Prolonged Exposure Therapy for PTSD: Emotional Processing of Traumatic Experiences: Therapist Guide
Authors: Edna B. Foa, Elizabeth A. Hembree, and Barbara Olasov Rothbaum
Reviewers: Susan P. Stevens and Maha H. Zayed

11. Handbook of Obesity Prevention: A Resource for Health Professionals
Authors: Shiriki Kumanyika and Ross C. Brownson (Eds.)
Reviewer: Marla M. Sanzone

Film Review
12. 2 Days in Paris
Director: Julie Delpy
Reviewer: Karen Conner

Friday, July 18, 2008

Wechsler Arithmetic test: Measure of Gq or Gf?

What does the Wechsler Arithmetic test measure? Why has it's interpretation been so variable over the decades? Why is it now classified (as per CHC theory) as a mixed measure of Gsm (Short-term Memory - Working memory; MW) and Gf (Fluid Reasoning - Quantitative reasoning; RQ) in the latest Essentials of Cross-Battery Assessment book (Flanagan, Ortiz and Alfonso, 2007)? [Click here if you need more information on CHC theory and the major abilities, definitions, and abbreviations]

While preparing for my recent presentation at the Third National School Psychology Neuropsychology Conference, I consulted the 2nd edition of the Essentials of Cross-Battery book. I noticed on page 310 that, in contrast to prior cross-battery classifications of the Arithmetic test as a primary measure of Gq (Quantitative Knowledge-Math Achievement; A3) and Gf (Fluid Reasoning-Quantitative Reasoning; RQ) [Note - I was involved in these prior classifications as a coauthor of the first cross-battery book (ITDR: McGrew and Flanagan, 1998) and the Wechsler-specific spin-off cross-battery book (Flanagan, McGrew & Ortiz, 2000), it had now changed to Gsm and Gf.

First, a historical note. In the ITDR and Wechsler cross-battery books the primary Gq classification was based on a series of CHC/Gf-Gc designed cross-battery (joint) factor studies. The secondary Gf classification was a logical content analysis based classification, for which no available CHC/Gf-Gc cross-battery factor analysis supported the classification.

A review of page 310 in the 2nd Edition of the Essentials of CB indicates that the Gsm and Gf classifications are based on "factor analysis from the WISC-IV technical and interpretive manual (Psychological Corporation, 2003) and from the results of factor analysis reprted in Keith, Fine, Taub, Reynolds, and Kranzler (2006)." My problem with this change is that these supporting analyses are all within-battery (WISC-IV only) confirmatory factor analysis studies (CFA), and thus do not include the complete range of CHC indicators in the analysis, especially other Gq markers. If you want to see a prior post I made about my disagreement with the Keith et al. Arithmetic classification, click here. Personal communication with one of the XBA Essentials books authors indicates that the Gf classification is also intended to reflect content validity evidence.

Why do I take issue with the use of within-battery CFA to make CHC test classifications? If you want the long story you can read about the strengths and limitations of within- and cross-battery CFA studies in the first two XBA books listed above. If you want a short-course on the issue, you can check out an on-line PPT show I just uploaded that conceptually illustrates the limitations of within-battery CFA studies....and...more importantly, the advantage of CHC-designed cross-battery (joint) CFA studies classifying tests as per CHC theory.

To date I know of 9 different Wechsler/Woodcock-Johnson CHC/Gf-Gc designed cross-battery studies. All 9 studies include other markers of Gq (math achievement tests). In ALL of these analysis the Wechsler Arithmetic test has a large a significant loading on Gq (average loading in the mid .70's)....none on Gf. In one study (Phelps et al. 2005) there is a small secondary loading on Gs. In none of these cross-battery studies does Arithmetic display a significant Gsm factor loading. You can view a summary of these CHC-designed cross-battery findings, as well as the Keith et al. (2006) model upon which the current (and I believe inaccurate) Arithmetic Gf classification is based (due to a loading of .79 on a Gf factor), at the following link.

My two cents. I believe the best available analysis argue for the Wechsler Arithmetic test being interpreted primarily as a measure of Gq (Math Achievment-A3). I believe practitioners should not interpret this test as a primary or strong measure of Gf (Fluid Reasoning - Quantitative Reasoning; RQ). This does not mean that RQ is probably not involved. What the data indicate that if RQ is involved, the amount of variance is trivial and dwarfed by Gq-A3.

Conflict of interest disclosure - I'm a coauthor of the WJ III and thus have a financial interest in a competitor to the Wechsler batteries. I no longer receive any royalties from the two respective cross-battery books I coauthored.

Tuesday, July 15, 2008

IQs Corner APA book nook 7-18-08

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A new issue of PsycCRITIQUES is available online.

July 16, 2008
Volume 53, Issue 29

Book Reviews
1. Sex Offending: Causal Theories to Inform Research, Prevention, and Treatment
Authors: Jill D. Stinson, Bruce D. Sales, and Judith V. Becker
Reviewer: Stephen P. Hampe

2. Cognitive-Behavioral Therapy for Smoking Cessation: A Practical Guidebook to the Most Effective Treatments
Authors: Kenneth A. Perkins, Cynthia A. Conklin, and Michele D. Levine
Reviewers: Maria Karekla, Marios Constantinou, and Yianna-Maria Stylianou

3. Taken Into Custody: The War Against Fathers, Marriage, and the Family
Author: Stephen Baskerville
Reviewer: Gordon E. Finley

4. The Shock Doctrine: The Rise of Disaster Capitalism
Author: Naomi Klein
Reviewer: Tod Sloan

5. Healing Tales: The Narrative Arts in Spiritual Traditions
Authors: Stanley Krippner, Michael Bova, Leslie Gray, and Adam Kay (Eds.)
Reviewer: Louise Sundararajan

Healing Stories: The Use of Narrative in Counseling and Psychotherapy
Authors: Stanley Krippner, Michael Bova, and Leslie Gray (Eds.)
Reviewer: Louise Sundararajan

6. Physical Illness and Schizophrenia: A Review of the Evidence
Authors: Stefan Leucht, Tonja Burkard, John H. Henderson, Mario Maj, and Norman Sartorius
Reviewer: John W. Newcomer

7. Cognitive Diagnostic Assessment for Education: Theory and Applications
Authors: Jacqueline P. Leighton and Mark J. Gierl (Eds.)
Reviewer: Howard T. Everson

8. Lesbian Motherhood: Stories of Becoming
Author: Amy Hequembourg
Reviewer: Susan Lonborg

9. Creativity, Mental Illness, and Crime
Author: Russell Eisenman
Reviewer: Marlene M. Eisenberg

10. Why Do They Kill? Men Who Murder Their Intimate Partners
Author: David Adams
Reviewer: Henck van Bilsen

11. Assessment of Feigned Cognitive Impairment: A Neuropsychological Perspective
Author: Kyle Brauer Boone (Ed.)
Reviewers: James Robert Youngjohn and Michael Lee Thomas

Film Review
12. The Brave One
Director: Neil Jordan
Reviewer: Jerry Gold

Dr. Richard Woodcock Neuropsych Keynote slide show: Evolution of Cognitive Assessments

A copy of Dr. Richard Woodcock's Keynote address (The Evolution of Cognitive Assessments) at the Third National School Psychology Neuropsychology conference (Dallas, July 10, 2008) is now available for viewing as an on-line PPT show (that can also be downloaded). Click here to go to my SlideShare site where this is now available. The slides do not contain everything Dr. Woodcock presented as certain copy-protected information was removed prior to posting. Also, his personal comments/stories about the serendipitous events that brought him to the field of psychoeducational test development are not included in the slides.

Excercise may limit brain shrinking

Another benefit to excercise as we age.

Sent from KMcGrew iPhone

Monday, July 14, 2008

CHC narrow abilities related to reading and math slide posted

I just returned from the National School Psychology Neuropsychology conference in Texas. A great conference with a very competent crowd of people to present to.

During my presentation it was brought to my attention that one of my key PPT slides/handouts (Key CHC narrow abilities important for reading and math achievement) on the all-presenter handout/slide CD was difficult to view due to problems with the shading scheme I had used. I promised to make a clean copy available via my blog for the participants. I've now posted three different versions of this slide for download. The formats provided are: PPT slide; JPEG image; PDF file. Take your choice and select whatever looks best for you.

Thanks for your patience. I hope to attend and present at this conference in the future.

Computerized cognitive testing


Sharp Brains has a good post summarizing the recent activity in large
scale computerized cognitive testing. See link below.

Sent from KMcGrew iPhone

Smart girls and boys use different parts of brains?


From ENL a study suggesting what prior research has suggested in the
past-boys and girls tax different parts of their brains when
performing certain activities.

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Wednesday, July 09, 2008

PS to prior post

Yes. Lots of spelling errors in prior FYI post. I'm still learning to
type with my two thumbs on my iPhone keyboard. It is not that easy.
Hang with me. Thanks.

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Dick Woodcock and Dan Miller

Richard Woodcock and Dan Miller at National School Pyschology
Neuropsych Conference. Dick is to receive the Lifetime Achievement
Award tomorrow.

On the road

I'm on the road I'm Dallas TX. Tomorrow I present at the National
School Neuropsychology Congerence. Posts will be minimal to none. I
shall return on Friday.

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Tuesday, July 08, 2008

IQs Corner APA book nook review

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A new issue of PsycCRITIQUES is available online.

July 9, 2008
Volume 53, Issue 28

Book Reviews
1. Mirrors in the Brain: How Our Minds Share Actions and Emotions
Authors: Giacomo Rizzolatti and Corrado Sinigaglia
Reviewer: Michael C. Corballis

2. Chronic Pain
Authors: Beverly J. Field and Robert A. Swarm
Reviewer: Timothy S. Clark

3. The Future Is Now: Science and Technology Policy in America Since 1950
Authors: Alan I. Marcus and Amy Sue Bix
Reviewer: Stephen D. Nelson

4. Politics in the Human Interest: Applying Sociology in the Real World
Authors: William Du Bois and R. Dean Wright
Reviewer: E. James Lieberman

5. The First Man-Made Man: The Story of Two Sex Changes, One Love Affair, and a Twentieth-Century Medical Revolution
Author: Pagan Kennedy
Reviewer: Gregory Lehne

6. Introduction to Clinical Psychology
Authors: Janet R. Matthews and Barry S. Anton
Reviewers: Annette M. Brodsky and Susan Steinberg-Oren

7. Dire Emotions and Lethal Behaviours: Eclipse of the Life Instinct
Author: Charles T. Stewart
Reviewer: Marilyn Newman Metzl

8. Treating Childhood Behavioral and Emotional Problems: A Step-by-Step, Evidence-Based Approach
Author: Andrew R. Eisen (Ed.)
Reviewer: Linda C. Caterino

9. Authentic Assessment for Early Childhood Intervention: Best Practices
Author: Stephen J. Bagnato
Reviewer: Michi Fu

10. The Handbook of Person-Centred Psychotherapy and Counselling
Authors: Mick Cooper, Maureen O'Hara, Peter F. Schmid, and Gill Wyatt (Eds.)
Reviewer: Ladislav Valach

11. Handbook of Multicultural School Psychology: An Interdisciplinary Perspective
Authors: Giselle B. Esquivel, Emilia C. Lopez, and Sara Nahari (Eds.)
Reviewer: Carlton W. Parks

Film Review
12. The Namesake
Director: Mira Nair
Reviewer: Theresa A. Thorkildsen

To edit your profile or discontinue your subscription, visit

Monday, July 07, 2008

IQ Research byte #4: Working memory and Parkinsons

Abstract at link below

Sent from KMcGrew iPhone

Math Developmental Neuropsych issue article review update

I've had a good response to the posting of the toc of a special issue of Developmental Neuropsychology focused on math and math disabilities. Folks have volunteered to review and provide guest posts for the articles by Bull et al., Grimm et al., Chong and Siegel, and Mazzocco et al. This should be fun. I'll post the guest reviews when they are available.

Anyone else interested?

Sunday, July 06, 2008

Brain freezes explained

I get brain freezes but my lovely wife claims to never had one. The BRAIN BLOGGER writes on possible explainations.

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Thursday, July 03, 2008

WJ III Australian Adaptation Sept. workshops down under

A shameless plug. The blogmaster will be making a series of workshops (click for info) on the soon to be released Australian Adaptation of the WJ III Battery [conflict of interest note - I'm a coauthor of the WJ III). Workshops are sponsored by PAA (Psychological Assessments Australia). Registration information is available here.

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Wednesday, July 02, 2008

CHC Gps and Gp: Developmental coordination disorder special issue

I just stumbled across a journal I had not seen before (Human Movement Science) that has a recent special issue devoted to developmental motor/coordination disorders. I simply have no degrees of freedom to add these articles to my "to do" reading I'm just providing this FYI for others. As per the CHC theory/model of human abilities, this area of human functioning would reside under the broad CHC domains of Gps (psychomotor speed) and Gp (psychomotor abilities)

The editorial lead article is "New and emerging approaches to understanding developmental coordination disorder" (Wilson & Larkin, 2008) and can be viewed by clicking here. Below is the lead paragraph to the editorial article. It is followed by a listing of the articles in this issue.
  • "The study of movement clumsiness in children (or Developmental Coordination Disorder (APA, 1994) has evolved considerably over the past 20 years. The field has mirrored parallel developments in the areas of motor control and learning, but also has influenced thinking in the mainstream developmental literature. A signifcant development has been cross-disciplinary approaches to understanding DCD; developmental disorders like DCD are of interest to psychologists, physical therapists, occupational therapists, movement scientists, physical educators, paediatricians, child neurologists, nutritionists, and so on. Work has begun to integrate different methodologies, including genetic research using twin studies (e.g., Martin, Piek, & Hay, 2006), neurophysiology (e.g., Lust, Geuze, Wijers, & Wilson, 2006), and dynamical systems approaches (e.g., Whitall et al., 2006). This special issue of human movement science reflects this evolution. Furthermore, it shows how the work of international experts has influenced our very conception of atypical motor development, its broader impact on child and adolescent adjustment, and how movement skill can best be facilitated in children.....Papers here are drawn from the 7th International Conference on DCD, held in Melbourne, Australia in February 2007."
Record 1 of 15
Authors BE Faught, J Cairney, J Hay, S Veldhuizen, C Missiuna, CA Spironello
Title Screening for motor coordination challenges in children using teacher ratings of physical ability and activity
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 177-189

Record 2 of 15
Authors MM Schoemaker, BCT Flapper, HA ReindersMesselink, A deKloet
Title Validity of the motor observation questionnaire for teachers as a screening instrument for children at risk for developmental coordination disorder
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 190-199

Record 3 of 15
Authors S Rosenblum, M LivnehZirinski
Title Handwriting process and product characteristics of children diagnosed with developmental coordination disorder
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 200-214

Record 4 of 15
Authors J Summers, D Larkin, D Dewey
Title Activities of daily living in children with developmental coordination disorder: Dressing, personal hygiene, and eating skills
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 215-229

Record 5 of 15
Authors P deCastelnau, JM Albaret, Y Chaix, PG Zanone
Title A study of EEG coherence in DCD children during motor synchronization task
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 230-241

Record 6 of 15
Authors C DiBrina, R Niels, A Overvelde, G Levi, W Hulstijn
Title Dynamic time warping: A new method in the study of poor handwriting
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 242-255

Record 7 of 15
Authors SJ Mackenzie, N Getchell, K Deutsch, A WilmsFloet, JE Clark, J Whitall
Title Multi-limb coordination and rhythmic variability under varying sensory availability conditions in children with DCD
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 256-269

Record 8 of 15
Authors J Williams, PR Thomas, P Maruff, PH Wilson
Title The link between motor impairment level and motor imagery ability in children with developmental coordination disorder
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 270-285

Record 9 of 15
Authors L Pettit, J Charles, AD Wilson, MS Plumb, A Brockman, JHG Williams, M MonWilliams
Title Constrained action selection in children with developmental coordination disorder
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 286-295

Record 10 of 15
Authors BCM SmitsEngelsman, Y Westenberg, J Duysens
Title Children with developmental coordination disorder are equally able to generate force but show more variability than typically developing children
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 296-309

Record 11 of 15
Authors M Licari, D Larkin
Title Increased associated movements: Influence of attention deficits and movement difficulties
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 310-324

Record 12 of 15
Authors AA Poulsen, JM Ziviani, H Johnson, M Cuskelly
Title Loneliness and life satisfaction of boys with developmental coordination disorder: The impact of leisure participation and perceived freedom in leisure
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 325-343

Record 13 of 15
Authors M Cantell, SG Crawford, PK DoyleBaker
Title Physical fitness and health indices in children, adolescents and adults with high or low motor competence
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 344-362

Record 14 of 15
Authors D Green, ME Chambers, DA Sugden
Title Does subtype of developmental coordination disorder count: Is there a differential effect on outcome following intervention?
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 363-382

Record 15 of 15
Authors PH Wilson, D Larkin
Title New and emerging approaches to understanding developmental coordination disorder
Full source Human Movement Science, 2008, Vol 27, Iss 2, pp 171-176

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IQs Corner Recent Literature of Interest 7-2-08

This weeks recent literature of interest can be found by clicking here

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Is your time perspective making you happy or miserable?

I just made a post regarding people's "time perspectives" and happiness over at IQ Brain Clock. It might be of general interest to the readers of IQ's Corner.

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Tuesday, July 01, 2008

IQs Corner APA book nook reviews 7-1-08

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A new issue of PsycCRITIQUES is available online.

July 2, 2008
Volume 53, Issue 27

Book Reviews
1. The Kazdin Method for Parenting the Defiant Child: With No Pills, No Therapy, No Contest of Wills
Author: Alan E. Kazdin, with Carlo Rotella
Reviewer: Thomas H. Ollendick

2. The Matador's Cape: America's Reckless Response to Terror
Author: Stephen Holmes
Reviewer: David P. Nalbone

3. Multiculturalism Without Culture
Author: Anne Phillips
Reviewer: Mary Dugan

4. The Matter of the Mind: Philosophical Essays on Psychology, Neuroscience, and Reduction
Authors: Maurice Schouten and Huib Looren de Jong (Eds.)
Reviewer: Thomas Leahey

5. Handbook of Cultural Psychology
Authors: Shinobu Kitayama and Dov Cohen (Eds.)
Reviewer: Albert Valencia

6. Identity and the Modern Organization
Authors: Caroline A. Bartel, Steven Blader, and Amy Wrzesniewski (Eds.)
Reviewer: Leehu Zysberg

7. Healing With Stories: Your Casebook Collection for Using Therapeutic Metaphors
Author: George W. Burns (Ed.)
Reviewer: Moshe Landsman

8. Integrating the Mind: Domain General Versus Domain Specific Processes in Higher Cognition
Author: Maxwell J. Roberts (Ed.)
Reviewer: Michael Hogan

9. Personality Disorders in Childhood and Adolescence
Authors: Arthur Freeman and Mark A. Reinecke (Eds.)
Reviewer: Andrea Barnes

10. Handbook of Consultation-Liaison Psychiatry
Authors: Hoyle Leigh and Jon Streltzer
Reviewers: Jennifer Steel and Mary Amanda Dew

Video Review
11. Adolescent Girls Who Are Suicidal
with David A. Jobes
Reviewer: Lesley Slavin