psy·chol·o·gy 
/saɪˈkɑ:ləʤi/ noun
plural psy·chol·o·gies /saɪˈkɑ:ləʤi/ noun 1 [noncount] : the science or study of the mind and behavior
▪ She studied psychology in college. 2 : the way a person or group thinks [noncount] ▪ the psychology of an athlete ▪ mob psychology ▪ the psychology of crowd behavior [count] ▪ We need to understand the psychologies of the two people involved in the incident.
▪ She studied psychology in college.
— see also reverse psychology
