Analysis of the Differences between Biological and Humanistic Perspectives of Personality Development. Hans Eysenck believed physiology explained the differences in human behavior. Humanistic theorists believed that other factors such as experience, human needs, and feelings determined how a human being would react in a given situation. This paper compares Eysenck's theory with those of humanistic theorists Carl Rogers, Abraham Maslow, and George Kelly, giving key points of each theory and showing each differs from Eysenck's biological perspective and how they differ collectively. 5 pgs. 2 f/c. 4b. Pages: 5 Bibliography: 4 source(s) listed Filename: 3349 Perspectives Personality Development.doc Price: 44.75