Intellectual Competence & the Death Penalty: June 2014

Friday, June 27, 2014

The CHC Taxonomy of Human Cognitive Abilities Codebooks---two slide shows

The latest and greatest copies of the CHC theory of cognitive abilities definition codebooks are now available at ICDP's sister blog, IQ's Corner.

Wednesday, June 25, 2014

The Flynn Effect in Atkins MR/ID Death Penalty Cases: Adjust or not to adjust--that is the question: A slide show

The Flynn Effect in Atkins MR/ID death penalty cases. Adjust or not to adjust--that is the question from Kevin McGrew

Friday, June 20, 2014

Sharing The unitary ability of IQ in the WISC-IV and its computation via BrowZine

The unitary ability of IQ in the WISC-IV and its computation
Orsini, Arturo; Pezzuti, Lina; Hulbert, Sabina
Personality and Individual Differences, Vol. 69 – 2014: 173 - 175

10.1016/j.paid.2014.05.023

University of Minnesota Users:
https://www.lib.umn.edu/log.phtml?url=http://www.sciencedirect.com/science/article/pii/S0191886914003079

Non-University of Minnesota Users: (Full text may not be available)
http://www.sciencedirect.com/science/article/pii/S0191886914003079

Accessed with BrowZine, supported by University of Minnesota.

Monday, June 9, 2014

Assessing the Flynn Effect in the Wechsler scales. [feedly]

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Assessing the Flynn Effect in the Wechsler scales.
// Journal of Individual Differences - Vol 31, Iss 2

The current study examined the Flynn Effect (i.e., the increase in IQ scores over time) across all editions of the Wechsler Adult Intelligence Scale (WAIS), Wechsler Intelligence Scale for Children (WISC), and Wechsler Preschool and Primary Scale of Intelligence (WPPSI). By reverse engineering the correlation and scale score transformations from each Wechsler edition's technical manual, we made a mean and covariance matrix using the subtests and age groups that were in common for all editions of a given instrument. The results indicated that when aggregated, there was a FE of 0.44 IQ points/year. This Wechsler instrument used, however, moderates the FE, with the WISC showing the largest FE (0.73 IQ points/year) and the WAIS showing a smallest FE (0.30 IQ points/year). Moreover, this study found that the amount of invariant indicators across instruments and age groups varied substantially, ranging from 51.53% in the WISC for the 7-year-old group to 10.00% in the WPPSI for the 5- and 5.5-year-old age groups. Last, we discuss future direction for FE research based on these results. (PsycINFO Database Record (c) 2014 APA, all rights reserved)
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Kevin McGrew, PhD

Educational Psychologist

Director, Institute for Applied Psychometrics

IAP

www.themindhub.com

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Saturday, June 7, 2014

Is biculturalism a three dimensional construct?

Interesting article suggesting that biculturalism (and not degree of acculturation and enculturation) may be a three dimensional construct. Click on images to enlarge.