The aim of this paper is to summarize and tentatively synthesize a number of theories, typologies, and statements about systems and procedures for planned change in small groups, large organizations, and whole societies. Concepts are brought together from psychology, applied sociology, and business management, as well as diplomatic negotiation at the suprasystem level. Statements from Warren G. Bennis, K. D. Benne, and Robert Chin; Charles Darrah; and Gerald Nadler are discussed in terms of diagrams for insight into social problems presented in this paper. Five paradigms of psychotherapies are included plus 10 theories of sociological social problem solving in 3 paradigms that focus on the general "social problem solver" model. These in turn are related to the unit concept--"change in relationships"--which entails (1) discussing sources of change, institutionalized versus non-institutionalized; (2) comparing three analytic models of change; (3) examining the sources of resistance to change; and (4) making recommendations for initiating change in social organizations, societies, and groups. Included in the paper are 3 diagrams, 3 tables, and 21 references. (MLF)