TY - JOUR TI - Is the “Мiddle group” basic concept of organizational psychology? A substantive and methodological analysis T2 - Organizational Psychology IS - Organizational Psychology KW - social group KW - middle group KW - organizational psychology KW - social psychology KW - organization KW - group structure KW - the principle of hierarchy KW - functioning of groups KW - organizational culture KW - group phenomenology AB - The article presents the results of theoretical and methodological analysis of one of the most important but simultaneously the least explored concepts of social and organizational psychology — the concept of the middle group. A new approach to the interpretation of this concept and its role in the conceptual system of organizational psychology have been presented. There were suggested decisions of some key problems of psychology of groups: the phenomenology of the middle groups, their structural organization, criteria for their differentiation from the small and large groups, group dynamics. There was substantiated that the concept of the middle group can and should be regarded as the leading concept for synthesis of social and organizational psychology. The specific role of this concept in the organizational psychology theory were discussed in the article. The theses about the fundamental heterogenea of medium-sized groups and their hierarchical organization were formulated and developed. AU - Anatoliy Karpov UR - https://orgpsyjournal.hse.ru/en/2017-7-4/213472621.html PY - 2017 SP - 50-72 VL - 7