Human Psychology and Behaviour at different levels: child, adolescent, adult and elderly

The present paper explores the role of the study of Human Psychology and Behaviour in almost all the walks and spheres of human life. One can use the knowledge of different levels of human psychology and behaviour like infant psychology, child psychology, adolescent psychology, adult psychology, elder psychology etc. for seeking such proper development and growth of human life and society. After providing an overview of the meaning and need of the study of human psychology and behaviour, this paper focuses on the main characteristics of the developmental trend, psychology and behaviour pattern during the different stages of our life–infancy, childhood, adolescence, adulthood and elderhood.