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, September 10, 2010
iPost: Recommended best practice on Flynn effect adjustment in Atkins cases
I will be integrating this into the next installment of the Flynn effect series at ICDP
Looking to science rather than convention in adjusting iq scores when death is at issue.
Cunningham, Mark D.; Tassé, Marc J.
Professional Psychology: Research and Practice, Sep 6, 2010, No Pagination Specified. doi: 10.1037/a0020226
The progressive obsolescence of IQ test norms and associated score inflation (i.e., the Flynn effect) may have literal life and death significance in capital mental retardation determinations (i.e., Atkins hearings). Hagan, Drogin, and Guilmette (2008) asserted that IQ score corrections for the Flynn effect were inconsistent with a "standard of practice" they deduced from custom, convention, and authority. More accurately, this reflected a proposed practice guideline or recommendation for practice, rather than a standard of practice. Whether a proposed guideline or recommendation for practice, these are better informed by an analysis of the available science than accepted convention. The authors reviewed research findings regarding the occurrence of the Flynn effect in the "zone of ambiguity" (IQ = 71–80), and proposed a best practice recommendation for discussing and reporting Flynn effect correction of IQ scores in capital mental retardation determinations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)
Sent from KMcGrew iPhone (IQMobile). (If message includes an image-double click on it to make larger-if hard to see)