Research shows that violent behavior in males increases in direct proportion to the concentration of the male hormone testosterone in their systems, revealing a link between anger, violence, physiological type, and gender.
研究者並發現男性荷爾蒙──睪固酮濃度的高低與犯罪暴力程度成正比，顯示憤怒暴力與體質、性別都有關係。