Aggression Most psychologists define aggression as behavior with intent to harm or injure.
Maccoby & Jacklin. “Fairly well-established gender. difference” Maccoby & Jacklin “Fairly well-established gender difference” - For both physical and verbal aggressio - Across cultures - Appeared between 2 and 3 yrs old and continued through college - After that little information available
Janet Hyde – 5% of differences can be attributed to gender Age 6 – 7% of variance College Age – 1% of variance
Sex Differences in US Crime Statistics
Aggression in Pre-School Children
Biological Explanations Testosterone levels Pre-natal hormones Serotonin
Mice data
More Rat data
Bird data
Human data – Correlation Studies
No Correlation – Some studies on men have shown this kind of relationship
Correlation studies in Men High Testosterone levels have been correlated with: - History of arrests 2 studies - History of violent crimes 1 study - Less likely to marry, more to divorce, troubled relations 1 study - Aggressive disposition 2 studies - variety of anti-social behavior AWOL, alcohol & drug abuse 1 study
CAH Girls Activity Level
Serotonin Levels in Violent Suicides
Serotonin Reuptake Inhibitor
Stereotypes Play
Acceptable Male behavior
Big Boys Toys
Movies
Video Games
Sports Images
International Problem Solving