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, August 23, 2010

Flynn Effect--race, ethnic, and national differences and literacy--Guest blog post

Guest blog post by Scott Barry Kaufman on the Flynn Effect, literacy and IQ differences by race, ethnicity and nationality over at IQ's Corner (sister blog to ICDP blog)



Technorati Tags: psychology, forensic psychology, forensic psychiatry, neuropsychology, intelligence, school psychology, psychometrics, educational psychology, IQ, IQ tests, IQ scores, adaptive behavior, adaptive functioning, intellectual disability, mental retardation, MR, ID, criminal psychology, criminal defense, criminal justice, ABA, Atkins cases, Atkins death penalty, American Bar Association, Atkins cases, death penalty, capital punishment, AAIDD, Atkins MR/ID listserv, ICDP blog, psychiatry, psychiatry and criminal justice, Flynn effect, race and IQ, literacy and IQ
Posted by Kevin McGrew at 11:24 AM
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Labels: CHC theory, Flynn Effect, Guest posts
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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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About this blog & me

  • Blog purpose statement (5-12-09)
  • Kevin McGrew CV
  • Kevin McGrew Bio
  • Kevin McGrew Conflict of Interest Disclosure
  • My LinkedIn Profile

Flynn Effect Reference Project

  • Flynn Effect Reference Project

Applied Psychometrics 101 (AP101) Reports

  • AP101 #13: Problems with the 1960 and 1986 Stanford-Binet IQ scores in Atkins MR/ID death penalty cases
  • AP101 #11: Time to stop executing the mentally retarded--The case for applying the standard error of measurement (SEM)
  • AP101: #10: "Just say no" to averaging IQ subtest scores
  • AP101: # 1 Understanding IQ score differences
  • AP101 #2: What does the WAIS-IV measure?
  • AP101:#3 MDS of WJ III and CHC model implications
  • AP101:#4 Cluster analysis of WJ III: Theory and interp implications
  • AP101 #5: Standard error of measurement (SEM): An explanation and facts for "fact finders" in MR/ID death penalty proceedings
  • AP101 #6: Flynn Effect Series-What is the Flynn Effect?
  • AP101 #7: Flynn Effect Series--Is the Flynn Effect a Scientifically Accepted Fact?
  • AP101 #8: Flynn Effect Series: Brief History of FE--It was NOT given birth by Atkins SCOTUS decision
  • AP 101 #9: Why the ASVAB should not be used in the determination of a diagnosis of MR/ID

Applied Psychometrics 101 (AP101) Briefs

  • AP 101 Brief 18: Misunderstanding and misuse of achievement test scores in Atkins MR/ID death penalty cases: Part 2--Range of expected grade equivalents
  • AP 101 Brief # 18: Misunderstanding and misuse of achievement test scores in Atkins MR/ID death penalty cases: Part 1--Range of expected standard scores
  • AP 101 Brief # 14:Demographically adjusted neuropsych (Heaton) norm-based scores inappropriate for MR/ID Dx
  • AP 101 #12: Use of IQ component part scores as indicators of general intelligence in SLD and MR/ID diagnoses
  • AP101 Brief # 11: What is the typical IQ and adaptive behavior correlation?
  • AP101 Brief # 10: Understanding IQ score differecnes--Examiner errors
  • AP 101 Brief # 9: The problem with the 1/1.5 SD SS (15/22) subtest difference "rule-of-thumb"
  • AP101 Brief #8: Independent CFA of French WAIS-IV
  • AP101 Brief #5: The Wechsler-like IQ subtest scaled score metric: The potential for misuse, misinterpretation and impact on critical life decisions
  • AP101 Brief #2: IQ test battery descriptive comparison information
  • AP101 Brief #1: g or not to g
  • AP101 Brief # 7: Understandig IQ score differences via IQ Test CHC DNA Fingerprint analyses
  • AP101 Brief # 4: CHC theory and impact on IQ testing brief
  • AP 101 Brief # 6: Understanding Wechsler IQ score differences: The CHC evolution of the FS IQ's

Atkins-related PPT slide shows

  • D. Keyes & S. Blandino: Intellectual disability assessment: Malingering and retrodiagnosis in death penalty cases
  • F. Gresham: Intellectual assessment in Atkins cases and use of school diagnoses
  • J. Blume: An empirical look at Atkins v Virginia ands its application in capital cases
  • K. McGrew: [all other Slideshare PPT shows related to intelligence]
  • K. McGrew: IQ score interpretation in Atkins cases: The good, bad and the ugly
  • K. McGrew: The Flynn Effect in Atkins MR/ID cases: To adjust or not to adjust--that is the question
  • S. Greenspan: 2011 AAIDD Atkins symposium presentation

Atkins MR/ID Court Decisions & Related Doocuments

  • Agee v Oregon (2015)
  • Albarran v AL (2011)
  • Allen v IN (2012)
  • Altamirano (2019; Az)
  • Anderson v AR (2004; 2011)
  • Arbelaez v Florida (2010)
  • Atkins v VA (US Supreme Court, 2002)
  • Baer v Indiana (2011)
  • Bays v Ohio (2013)
  • Beckworth v AL (2009)
  • Bedford v Ohio (2011)
  • Bell v LA (2010)
  • Bell v MS (2011)
  • Bell v South Carolina (2016)
  • Berry v Epps (MS, 2006)
  • Bevel v FL (2008)
  • Bies v Bagley (OH; 2012)
  • Black v US (TN, 2005, 2011)
  • Blonner v OK (2006)
  • Blue v Thaler (TX, 2010, 2011)
  • Bourgeois v US (2020)
  • Bowles v FL (2019)
  • Bowling v Haeberline (KY, 2005)
  • Boyston v Az (2013)
  • Bracey v PA (2009)
  • Branch v Epps (204, 2007, 2011)
  • Briseno (exparte Briseno, TX, 2004)
  • Brown v FL (2007, 2009)
  • Brownlow v Texas (2020)
  • Brumfield v Cain (LA, 2008, 2009,2012, 2014,2015-SCOTUS)
  • Burke v OH (2005)
  • Burns v Fl (2006, 2011)
  • Burns v VA (2010)
  • Butler v Quarterman (TX, 2008, 2012)
  • Campbell v CA (2008, 2008b)
  • Candelerio-Santana (US-Puerto Rico; 2013)
  • Cathey v Texas (2013, 2017)
  • Cherry v FL (2007)
  • Chester v Thaler (TX, 2011)
  • Cole v Branker (NC, 2007, 2008)
  • Coleman v TN (2010)
  • Coleman v TN (2011)
  • Connor v Hall (GA, 2011)
  • Coonce v USA (2016)
  • Cribbs v TN (2009)
  • Daniel v AL (2011)
  • Davis v US (Maryland, 2009)
  • DeJesus v PA (2012)
  • Doss v MS (2009)
  • Dufour v FL(2008,2009,2011)
  • Dunn v LA (2010)
  • Elmore v SC (2010)
  • Engram v AR (2004)
  • Escobedo v Thaler (TX, 2012)
  • Esparaza v Thaler (TX, 2010)
  • Ford v OH (2019)
  • Foster v FL (2006)
  • Fraier v Bobby (Ohio, 2011)
  • Franqui v FL (2009)
  • Franqui v Florida (2011)
  • Frazier v OH (2007)
  • Frazier v OH (2008)
  • Fults v OK (2012)
  • Garcia v Thayer (TX, 2009)
  • Goodin v MS (2012, 2012)
  • Green v VA (2006,2007,2008)
  • Grell v AZ (2013)
  • Guevara v Thaler (TX, 2008, 2010)
  • Guevara v Thaler (TX, 2011)
  • Gumm v OH (2006)
  • Haliburton v FL (2021)
  • Hall v Thaler (TX, 2008, 2009, 2010)
  • Hall v TX (2012)
  • Hammond v OH (2008)
  • Hardy v US (LA, 2010)
  • Harris v OK (2019)
  • Harris v Thaler (TX, 2012)
  • Hearn v TX (2010, 2012)
  • Hedrick v True (VA, 2006)
  • Henderson v TX (2010, 2015)
  • Hernandez v Thaler (TX, 2011)
  • Herring v FL (2009)
  • Herring v FL (2011)
  • Hicks v GA (2004)
  • Hill v OH (2008)
  • Hill v Ohio (2011)
  • Hill v Schofield (GA,2010); Hill v Humphrey (2011); Hill v US (GA, 2013)
  • Hines v Thaler (TX, 2010, 2011, 2011b)
  • Hodges v Floridan (2010)
  • Holladay v Allen (AL, 2009)
  • Holmes v LA (2008)
  • Hooks v OK (2005, 2010, 2012)
  • Horak v NH (2010)
  • Howell v OK (2006)
  • Howell v TN (2011)
  • Hughes v Epps (MS, 2010)
  • Jackson v Norris (AR, 2010)
  • Jenkins v AL (2019)
  • Jimenez-Benceviz v USA (2013; Peurto Rico)
  • Johnson v Missouri (2013,2011, 2008)
  • Johnston v FL (2006, 2010)
  • Jones v FL (2007)
  • Jones v McNeil (Fl, 2011)
  • Jones v NC (2006-2008)
  • Keen v TN (2012)
  • Kilgore v McNeil (FL, 2010)
  • King v MS (2007,08,09)
  • Lambert v OK (2005)
  • Lane v Alabama (2018)
  • Lang v Ohio (2011)
  • Larry v Branker (NC, 2006, 2009)
  • Lewis v Ohio (2010)
  • Lewis v Thaler (TX, 2008, 2010, 2012)
  • Lizcano v TX (2010)
  • Long v Davis (TX: 2016)
  • Lorraine v OH (2007)
  • Lott v OH (2007)
  • Lynch v Hudson (OH, 2011)
  • Lynch v OH (2009)
  • Lyons v Crawford/Nixon (MO, 2009)
  • Maldonado vs Thaler (TX, 2009, 2010, 2012)
  • Matamoros v Thayer (TX, 2010)
  • Mathis v Thaler (2005, 2007, 2010, TX)
  • McCoy v OH (2009)
  • McDade v US (Al, 2010)
  • Mclaughlin v Polk (NC, 2006)
  • Meyers v Allen (AL, 2011, 2009, 2007)
  • Milam v TX (2021)
  • Miller v AR (2010)
  • Mitchell v Epps (MS, 2010)
  • Mitchell v Epps (MS, 2011)
  • Moore v Quarterman (TX, 2009) SCOTUS decision (2017), 2018 final decison, 2018 AG and ABA intervene
  • Moore v US (2011)
  • Moormann v Scriro (AZ, 2012)
  • Mundt v OH (2007)
  • Murphy v OH (2006, 2009)
  • Murphy v OK (2002, 2012
  • Myers v Workman (TX, 2010)
  • Nance v AR (2006)
  • Nelson v LA (2006)
  • Nicholson v Branker (NC, 2010)
  • Nixon v FL (2009, 2016, 2017)
  • O' Neal v Ohio (2010, 2011)
  • Ochoa v OK (2006)
  • Ochoa v Workman (OK, 2010)
  • Ortiz v US (2007, 2011)
  • Parker v US (Military, 2007)
  • Parrish v KY (2008, 2010)
  • Petetan v TX (2021)
  • Phillips v FL (2008. 2020)
  • Pickens v OK (2005)
  • Pierce v Thaler (TX, 2009, 2010)
  • Pizzuto v Idaho (2012, 2019)
  • Plata v TX (2007)
  • Pruitt v IN (2005, 2009, 2012, 2015(
  • Pruitt v TN (2011)
  • Ramirez v Ryan (AZ, 2010)
  • Raulerson (2019, Ga)
  • Reeves v AL (2020)
  • Richardson v Branker (NC, 2012)
  • Ripkowski v Thaler (TX, 2011)
  • Robinson v Schriro (Az, 2010)
  • Rodgers v FL (2006)
  • Rodrigues v Cook (CA, 2010)
  • Russell v Mississippi (2018)
  • Salazar v OK (2005)
  • Sanchez v PA (2010)
  • Sasser v Hobbs (AR, 2010, 2012)
  • Schoenwetter v FL (2010)
  • Shields v US (TN, 2012)
  • Smith v LA (2011)
  • Smith v OK (2010)
  • Smith v OK (2019)
  • Smith v TN (2010)
  • Sosa v TX (2012)
  • Stallings v OH (2008)
  • State v Duncan (AZ, 2009)
  • Stripling v GA (2011)
  • Tarver v Wilson (AL, 2012)
  • Taylor v Quarterman (TX, 2006, 2007)
  • Tharpe v Humphrey (GA, 2008, 2012)
  • Thomas v Allen (AL, 2009, 2010)
  • Thomas v FL (2004)
  • Thompson v Florida (2016)
  • Thorson v MS (2011)
  • Trevino v TX ( 2008, 2009)
  • Trotter v FL (2006)
  • Turner v US (FL, 2011)
  • Umana v US (2010)
  • Vela v NE (2010)
  • Vidal v CA (2005, 2007)
  • Waddy v Ohio (2011)
  • Walker v Kelly (VA, 2010)
  • Walker v True (VA 2005)
  • Walls v Florida (2016, 2019)
  • Watkins v NC (2011)
  • Webster (2019, IN)
  • Webster v US (2010, 2021)
  • Were v OH (2008)
  • Weston v AR (2006)
  • White v KY (2010)
  • White v OH (2008)
  • Wiley v Epps (MS, 2009, 2010)
  • Williams v LA (2009)
  • Williams v Mitchell (OH, 2011)
  • Williams v OH (2008)
  • Williams v PA (2013)
  • Williams v Thayer (TX,2007, 2008, 2010)
  • Wilson v Texas (2010, 2011)
  • Wilson v US (NY, 2014, 2016)
  • Winston v VA (2011, 2009, 2007, 2012)
  • Woods v TX (2008,20009)
  • Wright v Florida (2018)
  • Ybarra v NV (2011)

Atkins Related Articles

  • Benforado (2010): The geography of criminal law
  • Bilz (2010). Defending the (Mis)Use of Statistics in Law
  • Blume et al (2009). An empirical look at Atkins & its application in capital cases
  • Blume et al (2009). Of Atkins & Men: Deviatons from Clinical Defs of MR in DP cases
  • Bonnie (2004). AP(sychiatric)A resource doc on MR and capital sentencing
  • Bonnie & Gustafson (2007). Challenge of implementing Atkins: How legislatures and courts can promote accurate assessments and adjudications of MR in DP cases
  • Broderick (2022). Executing Defendants with Intellectual Disabilities: Unconstitutional in Theory, Persistent in Practice
  • Brown & Murphy (2010). Through a scanner darkley: Functional neuroimaging as evidence of a criminal defendant's past mental states
  • Cheung (2013): Defining intellectual disability and establishing a standard of proof: Suggestions for a national model standard
  • Church (2003). Mandating Dignity: The United States SupremeCourt’s Extreme Departure From Precedent Regarding the Eighth Amendment and the Death Penalty
  • Cohen (2010). The racial geography of the death penalty
  • Colon (2009). Capital crime: How CA admin of the death penalty violates the 8th ammendment
  • Crowell (2016) on the Texas Briseno adaptive behavior factors
  • Dillard (2011). How to achieve the categorical exception of MR subjects from execution
  • Ellis (2014); SCOTUS Hall v Florida decisions: Implementing Atkins
  • Ellis et all. (2018): Evaluating INtellectual Disability: Clinical Assessments in Atkins Cases
  • Garrett (2010). Substance of false confessions
  • Gershowitz (2010). Statewide capital punishment: The case for eliminating counties' role in death penalty
  • Hans (2009). The Twenty-First Century Jury: Worst of Times or Best of Times?
  • Harvard Law Review: Admiting Doubt: A New Standard for Evidence
  • Hashimoto (2010): Class matters
  • Haug & Baird (2011). Find the Error in Daubert
  • Haydt et al. (2014): Advantages of DSM-5 in Dx of Intellectual Disability
  • Hudson et al (2008). Lightning but no thunder: The need for clarity in military courts re: the def. of mental retardation in capital cases for procedures in implementing Atkins v Virginia
  • Johnson et al. (2019): Race, ID & death: Invidious influences on Atkins determinations
  • Kan (2009). Presenting information about mental retardation in the courtroom: A content analysis of pre-Atkins capital trial trancripts from Texas
  • Kaye (2016): Deadly statistics: Quantifying an “Unacceptable Risk” in Capital Punishment
  • Kirchmeier (2010: The undiscovered country: Execution competency and comprehending death
  • Kirchmeier et al. (2010). Vigilante Justice: Prosecutor Misconduct in Capital Cases.
  • LaPrade & Worrall (2020): Atkins State-by-state analysise
  • Lucas (2017): An Empirical Assessment of Georgia's Beyond a Reasonable Doubt Standard to Determine Intellectual Disability in Capital Cases
  • Markel (2009). Executing retributivism: Panetti & the future of the 8th Ammendment
  • Maroney (2011). Adolescent Brain Science since Graham v Florida
  • Monahan & Walker (2010). 25-years of social science and the law
  • Mossman (2003). Atkins-A psychiatric can of worms
  • Mulroy (2012): Execution by accident: Evidentiary & constitutional problems with the "childhood onset" requirement in Atkins claims
  • Nevins-Saunders (2010). Incomprehensible crimes: Defendants with mental retardation and statuatory rape
  • Perlin (2009): Can international rights laws be an effective source of rights in correctional conditions litigation?
  • Perlin (2009): Some Therapeutic jurisprudence dilemmas in the representation of criminal defendants in incompetency and insanity cases
  • Perlin (2020). “Man is Opposed to Fair Play”: An Empirical Analysis of How the Fifth Circuit Has Failed to Take Seriously Atkins v. Virginia
  • Primus (2010). Structural view of habeas corpus
  • Raffensperger (2013): Atkins v Virginia: The need for consistent substantive and procedural application of the ban on executing the intellectually disabled.
  • Roko (2010). Finality, habeas, innocence, and the death penalty: Can justice be done?
  • Rutledge (2010): Decisional Sequencing
  • Ryan (2009). Does the 8th amendment punishments clause prohibit only punishments that are both cruel and unusual?
  • Ryan (2010). Judging Cruelty
  • Sanger (2015). IQ, intelligence tests, "ethnic adjustments" and Atkins
  • Steiker & Steiker (2010). No More Tinkering with the Death Penalty
  • Sundby (2011): War & Peace in the Jury Room: How Capital Juries Reach Unanimity
  • Tuerkheimer (2010). Criminal justice at a crossroads: Science-dependent prosecution and the problem of epistemic contingency
  • Weithorn (2008). Conceptual hurdles in application of Atkins
  • Wexler (2010). Therapeutic jurisprudence and its application to criminal justice research and development
  • White (2009). Treated differently in life but not in death

Amicus Briefs

  • APA: Moore v Texas (2016)
  • AAIDD/ARC Lizcano v Texas (2015)
  • APA and AAIDD: Hall v Florida (2014)
  • ACLU: Wood v Allen (2009)
  • APA: Juvenile sentencing (2005,2009)
  • AAIDD: Dufour v Florida (2009)
  • AAIDD: Briseno v Quarterman (2008)
  • AAMR: Stripling v Head (2003)
  • AAMR et al: Tennard v. Dretke ( 2003)

Standards, Ethics, Guidelines & Position Statements

  • AAPL forensic guidelines for eval. of psychiatric disability
  • American Academy of Psychiatry (2005) Ethics for Forensic Psychiatry
  • ABA (2006) position statement
  • AERA/APA/NCME (2014) Joint Test Standards
  • Specialty Guidelines for Forensic Psychology (2012)

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      • iPost: Cal. Supreme Reaffirms Death Penalty Delays
      • iPost: Inventory of Legal Knowledge now available...
      • iPost: Forensic psychology at the crossroads
      • Court Decision: More on Mathis v Thaler (2005, 20...
      • But he doesn't look mentally retarded! Guest post...
      • iPost: Kagan's testimony on the death penalty
      • iPost: Pennsylvania still trying to decide how to...
      • iPost: Top-Ten Recent SSRN Downloads
      • iPost: Court decision-Mathis v Thaler (TX, 2010)
      • iPost: THE CONSTITUTION IN 2020: THE FUTURE OF CR...
      • iPost: Forensic update: Malingering and incompetency
      • IPost: Hall v Thaler SCOTUS petition--more info f...
      • Atkins MR/ID death penalty case a "notable petitio...
      • Comments by an "Eminence Grise": Stephen Greenspa...
      • An empirical look at Atkins v Virgina and its Appl...
      • iPost: The Flynn Effect and IQ Disparities Among R...
      • Flynn Effect--race, ethnic, and national differenc...
      • Thanks to all readers of ICDP blog
      • iPost: Flynn effect for memory could invalidate ne...
      • iPost: Top-Ten Recent SSRN Downloads
      • PS/correction to SSA MR/ID criteria post today
      • Social Security Admin (SSA) proposes new MR/ID (an...
      • iPost: Bandes on the Strange Persistence of the Am...
      • AAIDD 2010 Atkins MR/ID death penalty symposium su...
      • Court Decisions: More on Larry v Banker (NC, 2009...
      • iPost: Pennsylvania discussing how (and who) to D...
      • Update: Maldonado v Thaler (2010) - a blow agains...
      • iPost: Software predicts criminal behavior ?
      • iPost: Implicit Bias and the Law
      • FYI: 4th International Congress on Psychology and...
      • Call for Papers: Socio-Legal Review
      • iPost: APA Dispatch II: Whither juvenile forensics?
      • Research brief 8-16-10: Do warnings deter malinge...
      • Off task: Happiness is an optimized hard drive :)
      • iPost: "Will Brain Science Develop Alternative Te...
      • iPost: Moriarty Symposium Foreword--neuroscience ...
      • iPost: Notable Atkins capital habeas ruling from t...
      • iPost: Garrett on the Substance of False Confessions
      • Book nook: Essential Ethics for Psychologists (APA)
      • Institute for Applied Psychometrics (IAP) internet...
      • Bryan R. Schechmesiter Death Penalty College at Sa...
      • iPost: "The Neuroscience of Responsibility - Works...
      • iPost: New Law book on criminal justice
      • Legal Trac:Competency to be executed: Panetti v. Q...
      • Legal Trac:Competency of criminal defendants to wa...
      • Legal Trac:Excerpts from the reference manual-Comp...
      • Court Decision: Wilson v Quarterman (TX, 2009)--G...
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