behaviourism      
noun [ U ]  psychology UK specialized (US behaviorism) uk/bɪˈheɪ.vjə.rɪ.zəm/ us/bɪˈheɪ.vjɚ.ɪ.zəm/
 行为主义
the theory that the study of the human mind should be based on people's actions and behaviour, and not on what they say that they think or feel