Abstract
This study examined the influence of training and practice on sex differences in Mental Rotation Test scores. Ss were Texas A&M undergraduates (n = 347) enrolled in an introductory psychology course. The sample was nearly evenly distributed between males (n = 173) and females (n = 174). Each S completed the Mental Rotation Test on two occasions separated by an interval of three weeks and received unobtrusive training on the task between testing sessions. Significant differences were found for males and females on the Mental Rotation Test within and across trials. There was no evidence for a differential response to training and practice by females in comparison with males.