Ethology: Behaviourism is a term that also describes the scientific and objective study of animal behaviour, but it usually refers to the study of trained behavioural responses in a laboratory context, and without a particular emphasis on evolutionary adaptivity. 5 Instinct 6 Learning 6.1 Habituation 6.2 Associative learning 6.3 Imprinting 6.4 Observational learning 6.4.1 Imitation 6.4.2 Stimulus enhancement 6.4.3 Social transmission 6.5 Teaching 7 Mating and the fight for supremacy 8 Living in groups 8.1 Benefits and costs of group living 8.2 Group size