In understanding the dynamics and behavior of the society as they occurred in a particular space and time, social scientists often utilize sociological theories. It is through sociology that the investigator is able to understand how these dynamics and behavior influence the persistence or absence of a social phenomenon, and how these influence also the individual as a member of the society under study. However, if the investigator would want to look or delve into the processes and factors involved in the development of human behavior, then psychological theories are used to provide the investigator better and various perspectives on how the human mind operates and responds.
             The usefulness of theories in the field of psychology comes to a point wherein they can sufficiently provide an adequate explanation to human behavior, set in the context of the external environment, personal history, or even human nature itself. Generally, psychological theories are grouped under different perspectives, which act as representations of a specific argument or stance that a group of psychologists believe about what human behavior and mind are and should be, depending on their beliefs and the scientific evidence that each perspective provides. Under the field of psychology, these perspectives are identified as: biological approach, psychodynamic approach, behavioristic approach, humanistic approach, cognitive approach, and evolutionary approach (Zimbardo & Gerrig, 1996:16-19).
             These perspectives in psychology provide a specific facet or way of looking at cases and situations significant and relevant to the study of human behavior and the mental processes involved in it. Under the biological approach, human behavior is posited to be a result of "biochemical processes"; therefore, the "alteration" of these processes can also result to a corresponding change in the individual's behavior. Through this perspective, psychologists are able to explo...