Different planets? Physically, Yes. Psychologically, No. (image) University of Rochester Share Print E-Mail Caption On physical characteristics, like strength (top graph), men and women fall into distinct groups with very little overlap. But for most psychological attributes, including masculine attitudes (lower graph), variability within each sex and overlap between the sexes is extensive. The physical strength graph shows statistical analysis of the scores for the National Collegiate Athletic Association's long jump, high jump, and javelin throw competitions. The masculinity-assertiveness graph is based on self-reported measures of competitiveness, decisiveness, sense of superiority, persistence, confidence, and the ability to stand up under pressure. Credit University of Rochester Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.