The Cattell-Horn-Carroll (CHC) model is a comprehensive model of the major dimensions of individual differences that underlie performance on cognitive tests. Studies evaluating the generality of the CHC model across test batteries, age, gender, and culture were reviewed and found to be overwhelmingly supportive. However, less research is available…

One hundred undergraduate arts students were tested on all the scales of Wechsler Adult Intelligence Scales (WAIS) and the Differential Aptitude Tests. Varimax solutions were extracted on WAIS scores under four analytic conditions. No progressive increment in the WAIS communalities was marked as the marker variables increased. (Author/RL)

The gains of scores on standardized intelligence tests (i.e., Flynn effect) have been the subject of extensive debate concerning their nature, causes, and implications. The aim of the present study is to investigate whether five intelligence tests are measurement invariant with respect to cohort. Measurement invariance implies that gains over the…