AP101 Brief #1: g or not to g: IQ part vs full scale IQ scores in determining general intelligence

IQs Corner readers may find the Applied Psychometrics 101 Brief #1:  g or not to g in Atkins MR death penalty cases (post at sister blog) of interest.  Briefly, the two-post AP101 Brief presents and disucsses the relative g-loadings (g-ness) of composite scores from the WAIS-III, WJ III, and KAIT in a university adult sample. Questions are raised, based on analysis of data from a sample of 200 young adults, regarding the use of different composite scores from intelligence batteries in place of the total (full scale) IQ score when considerable variability exists in an IQ batteries composite scores.