Few topics in psychology generate more heat and less light than sex differences in cognitive abilities. Claims range from “men and women are cognitively identical” to “there are fundamental, biologically determined differences that explain occupational disparities.” The data support neither extreme. Here is what large-scale research actually shows — including …
Summary. An analysis of performance on the Jouve–Cerebrals Test of Induction (JCTI) and four GAMA subtests (Matching, Analogies, Sequences, Construction) points to a single dominant source of individual differences rather than two separate abilities. With N = 118, factor-analytic evidence favors a general reasoning factor that subsumes both spatial–temporal and …
