Psychological development has been concerned by people since ancient times. But before the end of 19, most of the related discussions were put forward by philosophers and social historians. From 19, the scientific research on individual psychological development began.

Research on Children's Psychological Development

1882, German psychologist W.T. Player published the book Children's Mind based on systematic observation and experimental data of his children. This book is regarded as the first scientific work in the history of psychology to systematically study children's psychological development.

Research on the Psychological Development of Teenagers

The early research on individual psychological development only focuses on children. After World War I, he turned to a large number of young people.

Research on the psychological development of the elderly

After World War II, people began to pay attention to the study of adults and the elderly.

The development of psychological theory

There are many theories about psychological development in the west, among which psychoanalysis theory, cognitive-structural theory and stimulus-response coupling theory are the main ones.