Intellectual Competence & the Death Penalty

An attempt to provide understandable and up-to-date information regarding intelligence testing, intelligence theories, personal competence, adaptive behavior and intellectual disability (mental retardation) as they relate to death penalty (capital punishment) issues. A particular focus will be on psychological measurement, statistical and psychometric issues.

Friday, December 25, 2015

New Wechsler Flynn Effect study by Weiss et al. (2015)

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Click on image to enlarge
Sunday, December 20, 2015

Sharing It's getting bigger all the time: Estimating the Flynn effect from secular brain mass increases in Britain and Germany via BrowZine

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It's getting bigger all the time: Estimating the Flynn effect from secular brain mass increases in Britain and Germany Woodley of Menie...
Wednesday, December 16, 2015

When Phrenology Was Used in Court

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When Phrenology Was Used in Court In the 1830s, phrenology was just beginning to garner the veneer of legitimacy.Image by Slate, illustratio...
Monday, December 14, 2015

RE: J Am Acad Psychiatry Law Table of Contents for December 2015; Vol. 43, No. 4

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Sent from EarthLink Mobile mail On 12/14/15, 8:18 AM, < jaapl-mailer@alerts.highwire.org > wrote:  Home Current Issue Archiv...
Tuesday, December 8, 2015

Flynn effect methodological issues: Special issue of the Journal of Intelligence

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Special Issue "Methodological Advances in Understanding the Flynn Effect Access to this open access journal can be found here. ...
Thursday, November 26, 2015

Article: Why IQ Fluctuates Over Your Lifespan

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Check out this story on Flipboard! Why IQ Fluctuates Over Your Lifespan From The Huffington Post on Flipboard In 1932, the entire populatio...
Thursday, November 12, 2015

Race- or demographically-adjusted IQ norms are inappropriate in Atkins ID death penalty cases: New law review article by Robert Sanger

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Previously, I coauthored an IAP Psychometric Brief (#14) with Dr. Dale Watson on the inappropriate use of "demographically adjus...
Monday, November 9, 2015

Sharing Exploratory bifactor analysis of the Wechsler Intelligence Scale for Children—Fifth Edition with the 16 primary and secondary subtests via BrowZine

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Exploratory bifactor analysis of the Wechsler Intelligence Scale for Children—Fifth Edition with the 16 primary and secondary subtests Domb...
Sunday, November 8, 2015

Perlin on Insanity and Incompetency [feedly]

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---- Perlin on Insanity and Incompetency // CrimProf Blog Michael L. Perlin (New York Law School) has posted ...
Wednesday, November 4, 2015

Missouri man with mental disability will not be executed, fo...

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Missouri man with me...
Saturday, October 31, 2015

Sharing A reversal of the Flynn effect for spatial perception in German-speaking countries: Evidence from a cross-temporal IRT-based meta-analysis (1977–2014) via BrowZine

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A reversal of the Flynn effect for spatial perception in German-speaking countries: Evidence from a cross-temporal IRT-based meta-analysis (...
Thursday, October 15, 2015

Evolution of the WJ to WJ IV GIA and CHC clusters

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Click on image to enlarge. Long-time users of the various editions of the WJ cognitive battery (WJ, WJ-R, WJ III, WJ IV) know that t...
Wednesday, October 14, 2015

Sharing A Systematic Approach to Subgroup Classification in Intellectual Disability via BrowZine

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A Systematic Approach to Subgroup Classification in Intellectual Disability Schalock, Robert L.; Luckasson, Ruth Intellectual and Developm...
Thursday, September 24, 2015

WISC-V expanded index scores: Verbal Expanded Crystallized (Gc) and Expanded Fluid (Gf) index scores and tables

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Click on image to enlarge for easier reading   Somehow I seemed to have missed this development on my research literature monito...

Online course in Mental Disability Law and Criminal Law begins Oct 4th

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Online Course in Mental Disability Law and Criminal Law | Begins October 4th Michael Perlin and Heather Cucolo will be...
Thursday, September 17, 2015

Sharing Neurolaw via BrowZine

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Neurolaw Belcher, Annabelle; Sinnott-Armstrong, Walter Wiley Interdisciplinary Reviews: Cognitive Science, Vol. 1 Issue 1 – 2010: 18 - 22 ...
Wednesday, September 16, 2015

ID is a "condition"...not a number. Ethics of IQ cut-off scores for ID Dx

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Click on image to enlarge abstract.  Very thought provoking article (click to view) by Greenspan, Harris and Woods on the use of IQ cut...

Sharing Information Integration Theory, Juror Bias, and Sentence Recommendations Captured Over Time in a Capital Trial via BrowZine

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Information Integration Theory, Juror Bias, and Sentence Recommendations Captured Over Time in a Capital Trial Estrada-Reynolds, Victoria C...
Monday, September 14, 2015

Sharing Interindividual differences in general cognitive ability from age 18 to age 65years are extremely stable and strongly associated with working memory capacity via BrowZine

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Interindividual differences in general cognitive ability from age 18 to age 65years are extremely stable and strongly associated with workin...
Tuesday, September 8, 2015

Article: WISC-V Expanded Composite Scores

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WISC-V Expanded Composite Scores https://assessingpsyche.wordpress.com/2015/09/09/wisc-v-expanded-composite-scores/ Related topics: Programm...
Monday, August 24, 2015

Sharing Adversarial Allegiance among Expert Witnesses via BrowZine

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Adversarial Allegiance among Expert Witnesses Murrie, Daniel C.; Boccaccini, Marcus T. Annual Review of Law and Social Science, Vol. 11 Is...
Tuesday, August 18, 2015

AAIDD/ARC SCOTUS 2015 amicus brief regarding Texas adaptive behavior issues (Briseno factors)

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An amicus brief (click to access) has been filed with SCOTUS by AAIDD and ARC regarding a petition for writ of certiorari for a case i...
Tuesday, August 11, 2015

Law Review Article: Dr. James Ellis on Hall v Florida (SCOTUS, 2014)--ID is a condition-not a number

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Dr. James Ellis has presented a nice summary of the major change in the determination of ID in Atkins cases as a result of the Hall...

Court Decisions: Williams v Mitchell (2015, Ohio)

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I am trying to get caught up on court decisions that I have been unable to post due to lack of time.  Click here for latest decision re...
Thursday, August 6, 2015

The American Psychiatric Association Practice Guidelines for...

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Kevin McGrew shared the story, The American Psychiatric Association Practice Guid...
Wednesday, August 5, 2015

Fwd: Criminal Justice and People with ID: Important New Resource Available

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---------- Forwarded message ---------- From: AAIDD Bookstore <aaidd@memberclicks-mail.net> Date: Aug 5, 2015, 3:43 PM -0500 ...

Atkins MR/ID court decision: Henderson v Stephen (2015, Texas)

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The recent Texas Atkins ruling for Henderson v Stephen (2015) is now available here .  A prior decision in 2010 is available here .

Atkins MR/ID court decision: Pruitt v Neal (Indiana, 2015)

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The recent Pruitt v Neal (Indiana, 2015) Atkins decision is now available here.   Prior court decision documents (2005, 2009, 2012) for ...
Tuesday, August 4, 2015

Sharing Test Review: Delis Rating of Executive Function (D-REF) via BrowZine

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Test Review: Delis Rating of Executive Function (D-REF) Warnick, B.; Drake, M.; Vidrine, S. Journal of Psychoeducational Assessment, Vol. ...
Wednesday, July 29, 2015

Sharing Using Score Equating and Measurement Invariance to Examine the Flynn Effect in the Wechsler Adult Intelligence Scale via BrowZine

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Using Score Equating and Measurement Invariance to Examine the Flynn Effect in the Wechsler Adult Intelligence Scale Benson, Nicholas; Beau...
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Kevin McGrew
Dr. Kevin McGrew is Director of the Institute for Applied Psychometrics (llc). Additional information, including potential conflicts of interest resulting from commercial test development or other consultation, can be found at The MindHub(TM; http://www.themindhub.com ). General email contact is iqmcgrew@gmail.com
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