Firstly, psychology’s contributions have been mainly at the individual or micro level of analysis. Psychology is the science that seeks to measure, explain and sometimes change the behavior of humans and other animals. The people who have contributed and continue to add to the knowledge of organizational behavior are learning theorists, personality theorists, counseling psychologists and most important, industrial and organizational psychologists. In the other hand, their contributions have expanded to include learning, motivation, emotions, personality, training, perception, leadership effectiveness, job satisfaction, individual decision making, performance appraisal, attitude measurement, employee selection, work design and work stress. Moreover, psychology is classified in individual analysis.
Secondly, sociology is the study of people in relation to their social environment or culture which different with psychology that focuses on the individual. Sociology contributes their study of group behavior in organizations, particularly formal and complex organizations. However, their contributions have studied communication, power, conflict, intergroup behavior, norms, roles and status which have been classified for group analysis. While in contributes formal organization theory which organizational technology, organizational change and organizational culture have been classified for organization system analysis.
Next, social psychology is generally considered an area of