Responds to the comments of P. L. Ackerman (see record EJ751362), D. Y. Dai (see record EJ751364), and M. C. Gridley (see record EJ751365) on E. S. Spelke's original article "Sex differences in intrinsic aptitude for mathematics and science? A critical review" (see record EJ733610). Here, the current authors first consider Ackerman's criticism of IQ measures of cognitive sex differences, as well as his suggestion that Advanced Placement tests be used as a second measure. Next, the authors discuss Dai's suggestion that cognition and motivation, abilities and strategies, are inseparably bound in any meaningful measure of aptitude for mathematics and science. Finally, the authors address Gridley's suggestion that differences in men's and women's thinking styles and preferences explain gender disparities in math and science fields.