| Term | Definition |
| Aggression | Behavior that is intended to injure another person (physically or verbally) or to destroy property |
| Frustration-aggression hypothesis | Whenever a person's effort to reach a goal is blocked, an aggressive drive is induced that motivates behavior intended to injure the obstacle (person or object) causing the frustration |
| Social-leaning Theory | Shares basic principles of reinforcement with behaviorism, it differs from strict behaviorism in that it also emphasizes cognitive processes |
| Vicarious learning | Learning by observation |
| Catharsis | Purging an emotion by experiencing it intensely |