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.

Monday, October 10, 2011

Research brief: Ravens matrices test measures same Gf (fluid intelligence) ability in individuals with MR/ID

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Well designed and methodologically solid study indicates that the Ravens Coloured Progressive Matrices (measure of fluid intelligence, Gf, ...
Sunday, October 9, 2011

Book nook: Keith Widaman review of Earl Hunts "Human Intelligence"

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The journal Intelligence has an "in press" review of Earl Hunt's relatively new book on human intelligence. Dr. Keith Widam...

Some psychology re false confessions@psych101, 10/9/11 1:33 AM

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David Webb ( @psych101 ) 10/9/11 1:33 AM The Psychology Of False Confessions. http://t.co/rXpgzoiw Sent from Kevin McGrew's iPad Kevin M...
Wednesday, October 5, 2011

Research brief: Genetics and criminal responsibility

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Trends in Cognitive Sciences latest issue dealt with behavioral genetics research and issues. An article by Morse addressed genetics and c...

FYiPOST: Current Directions in Psychological Science Table of Contents for 1 October 2011; Vol. 20, No. 5

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I have a love affair with this journal.  One of the top journals for concise, up-to-date overviews of cutting edge research in many areas of...
Tuesday, October 4, 2011

Dr. Doug Detterman's bytes: Psychometric validity

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I have been remiss (busy) in my posting of Dr. Doug Detterman's bytes . Here is a new one on validity Validity is the extent to which a...
Monday, October 3, 2011

Science in the courtroom--Justice Stephen Breyer

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" In this age of science, science should expect to find a warm welcome, perhaps a permanent home, in our courtrooms. The reason is a si...

Atkins MR/ID Death Penalty Court Decisions: Lynch, Guevara, Hernandez, Thorson & Williams

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There has been a flurry of recent Atkins decisions. Thanks (again) to Kevin Foley for sending me copies. I have not read any of these dec...

Div for Forensic Psych 2012 conference submissions now open@PsyPAG, 10/3/11 5:53 AM

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PsyPAG ( @PsyPAG ) 10/3/11 5:53 AM Div of Forensic Psychology, 2012 Annual Conference, submissions now open. #dfpconf . Find out more at htt...
Sunday, October 2, 2011

Book nook: Reference book on scientific evidence

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Thanks to Kevin Foley for bringing the following National Academy of Sciences publication to my attention. It is possible to download PDF...
Wednesday, September 28, 2011

The AAPL practice guidelines for forensic eval. of psychiatric disability now posted

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The 2008 AAPL guidelines for the forensic evaluation of a psychiatric disability have now been added to the standards, guidelines, etc. sect...

1949 WISC: What date(s) should be used to calculate the Flynn effect for historical IQ scores?

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What date should be used when calculating the effect of norm obsolescence (aka, Flynn Effect ) for old 1949 WISC scores? I have seen psychol...
Tuesday, September 27, 2011

American Behavioral Scientist study suggests Twitter can foster sense of personal communities

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This is a bit off-topic for my blogs, but I am a user of various social media, primarily for professional purposes. But, others use social ...
Monday, September 26, 2011

FYiPOST: Top-Ten Recent SSRN Downloads

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in criminal law and procedure ejournals are here. The usual disclaimers apply. Rank Downloads Paper Title 1 536 Self-Defense Larry Alexander...
Saturday, September 24, 2011

Supreme Court embraces minimal relief for California prisoners with mental disabilities and other serious health care needs

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Story at link below http://go.galegroup.com/ps/i.do?ty=PublicationSearchForm&id=GALE%7CA267716743&v=2.1&u=umn_wilson&it=r...
Friday, September 23, 2011

FYiPOST: Criminal Law and Criminal Justice Books website

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James Finckenauer (Rutgers School of Criminal Justice) and Stuart P. Green (Rutgers School of Law–Newark)(pictured) are the co-editors of wh...

Ohio parole board recommends Governor spare life of person with MR/ID - J. Murphy

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The Ohio Parole Board is recommending to the Governor to spare Joseph Murphy, a person with MR/ID and a lengthy history of childhood abuse,...
Thursday, September 22, 2011

IAP AP101 Brief # 10: Understanding IQ score differences: Examiner Errors

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Why do significant differences in IQ scores often occur between different tests or the same test given at different times? The explanation...
Wednesday, September 21, 2011

More support for CHC interpretation of the WAIS-IV

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(double click on images to enlarge) Yet another CFA study of the WAIS-IV standardization data that suggests the CHC framework is likely the ...
Tuesday, September 20, 2011

IRT-based clinical psychological assessment and test development

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IRT based test development has been one of the most important psychometric developments during the past few decades. This is a followup to ...
Monday, September 19, 2011

FYiPOST: Top-Ten Recent SSRN Downloads

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in criminal law and procedure ejournals are here. The usual disclaimers apply. Rank Downloads Paper Title 1 519 Self-Defense Larry Alexander...

Research Brief: Competence for trial a discrete or continuous dimension?

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"In summary, our results suggest that a rational understanding of legal proceedings, as operationalized by performance on the Appreciat...
Sunday, September 18, 2011

Law Review Article: Scientific evidence in the courts--Dillhoff (2011) on the Daubert standard

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Scientific evidence in the courts----the Daubert standard. New law review article added to Law Review Article blogroll. Dillhoff, M. (2011...

Free access to forensic articles

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Visit link below from Karen Franklin for entire post The Journal of Forensic Sciences , published by the American Academy of Forensic Scienc...

Atkins MR/ID death penalty court decision: Update on Sasser v Hobb's (2011)

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Here is the latest update for Sasser v Hobbs (2011) . Click here for prior post and links to prior files. - iPost using BlogPress from Kev...
Saturday, September 17, 2011

Greenspan (2002) on MR/ID definition

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I found a copy of Stephen Greenspan's 2002 chapter on his ideas for the definition of MR/ID at his website. He is a must read for all ...

Greenspan on common sense/gullibility and MR/ID

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Social intelligence. Social awareness. Foolish action. Common sense. Stephen Greenspan has single handedly advocated for the concept of...
Friday, September 16, 2011

FYiPOST: Disability Law Symposium-Mar 2012-Call for Proposals-UC, Berkeley

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FYI-distributing as requested <<<<<<<<<<PLEASE DISTRIBUTE WIDELY>>>>>>>>>>> C...
Thursday, September 15, 2011

Book Nook: An Introduction to Psychometrics

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People always ask me for recommendations for a good intro book on psychometrics. Until recently, there have been no such books. There are ...

Psychometric issues in Atkins MR/ID cases: The IAP AP101 report series

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It is clear that many Atkins MR/ID death penalty decisions revolve around psychometric issues that many (but not all) attorneys, judges, and...
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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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