Personality Psychology

The title of “Godfather of Personality” may well be ascribed to Gordon Allport, who was the first to make public efforts to promote the “field of personality” in the 1930s (see Allport and Vernon 1930, cited under Gordon Allport). Personality psychology—located within what many argue is the broadest, most encompassing branch of psychological science—can be defined as the study of the dynamic organization, within the individual, of psychological systems that create the person’s characteristic patterns of behaviors, thoughts, and feelings (see Allport 1961, also cited under Gordon Allport). The field of personality psychology is concerned with both individual differences—that is, the way in which people differ from one another—and intrapersonal functioning, the set of processes taking place within any individual person. The area of personality psychology is often grouped with social psychology in research programs at universities; however, these are quite different approaches to understanding individuals. While social psychology attempts to understand the individual in interpersonal or group contexts (i.e., “when placed in Situation A, how do people, in general, respond?”), personality psychology investigates individual differences (i.e., “how are people similar and different in how they respond to the same situation?”). Personality psychology has a long history and, as such, is an extremely large and broad field that includes a large number of approaches. Discerning readers will quickly note that the current chapter is largely focused on what has come to be the most commonly studied perspective, the trait approach. Those readers interested in other approaches are referred to a number of resources focusing on Other Approaches within the diverse field.