Liam is at a party with his partner, Chloe. He notices another man, Ethan, flirting with Chloe and offering her a drink. Liam becomes angry, walks over, and shoves Ethan, warning him to stay away.
Describe how evolution and natural selection could account for Liam's behavior.
88 exam-style questions on Edexcel A Level Psychology Content, covering Central nervous system and neurotransmitters, Effect of recreational drugs on transmission, Brain structure and aggression, Evolution and natural selection, Freud's psychodynamic explanation of aggression, Role of hormones in aggression, Individual differences, and Developmental psychology. Each one has a worked solution and a mark scheme showing where the marks go.