Aggression: Biological Models
1. The challenge of defining aggression
2. Traditional: The role of instincts and drives
A. Psychodynamic model
B. Ethological model
C. Frustration-aggression hypothesis
3. Contemporary: Cognitive-neoassociationist model: the role of negative affect

Berkowitz's model of impulsive aggression (Source: Kenrick, Neuberg,
& Cialdini, 2002)
4. Much of the current research on the biology of aggression focuses on identifying the physiological substrate to violence.
A. Brain structures (amygdala and prefrontal cortex)

(Source: Driesen, 2002)
B. Testosterone (Discussion of Sapolsky article)