This review is part of a bibliographic study of research on factors related to the effectiveness of Aircraft Control and Warning (AC&W) sites in Alaska. The literature surveyed has previously been summarized in a series of annotated bibliographies (Reports AAL TR 61-19 to 61-24). The critical reviews based on this literature have been prepared as a series of five reports, covering the following topics: I. Informal, Natural Groups: Development, Structure, and Function; II. Dimensions of Group Structure and Group Behavior; III. Environmental Stress and Behavior Ecology; IV. Organizational Staffing; and V. Psychological Principles of Management and Leadership. The assistance of Mr. George Haven is acknowledged in the preparation of these reviews.