Psychology: Human Development The field of psychology may have grown to be respected as a science. Objectivity and the scientific method are both part of the psychologist's mode of operation. However, even the greatest of psychologists can only theorize about what makes human beings act the way they do. Absolutes are not part of psychology . Everything is relative and open to speculation. Theorists give us their views or ideas about life. In the field of psychology, there have been many different areas of interest. Human development is one of the most popular areas of interest for those who study psychology. Freud, Eri