This is about the early perspectives of psychology

The study of the way people think and behave is called psychology. The field of psychology has a number of sub-disciplines devoted to the study of the different levels and contexts of human thought and behavior. In early psychology, the different perspectives are functionalism, Gestalt, behavioral, psychodynamic, humanistic, physiological, evolutionary, cognitive, and cultural and diversity. The structuralism approach, which according to the textbook is the earliest approach in modern psychology, attempts to identify the basic …

…cannot be seen, their effects can be observed and measured. George Miller, Jerome Bruner, and Ulrich Neisser studied this perspective. The cultural and diversity perspective focuses on the influence that different cultures and diverse individuals have on the research process and the results of the process. David Matsumoto and Janet Hyde were the key figures in this perspective. Matsumoto believed that the psychological principles we invent about people may be reliable or discrepant across cultures.