Aggression

1. is intended to cause

1.1. injury

1.2. pain

1.3. suffering

1.4. demage

1.5. harm

2. Theories

2.1. instinct

2.1.1. behavior

2.1.1.1. spontaneously

2.1.1.2. with or without outside provocation

2.1.2. externally

2.1.2.1. displacement

2.1.2.1.1. impulse

2.1.2.1.2. not a specific person

2.1.2.2. catharsis

2.2. social learning

2.2.1. learn

2.2.1.1. modeling

2.2.1.2. observing

2.2.2. reinforcement

2.2.2.1. positive

2.2.2.2. no nagative