I: Lewin, then and now -- Approach as a description of the nature of scientific activity: Some reflections and suggestions -- Kurt Lewin and American psychology: An ambivalent relationship -- Lewin's sphere of influence from Berlin -- The man in transition: Kurt Lewin and his times -- Kurt Lewin's influence on social emotional climate research in Germany and the United States -- Theoretical positions of Kurt Lewin and Egon Brunswick - controversial or complementary points of view? -- Lewin and current developmental theory -- Lewin and social science: A theoretical note -- II: Practical Theory -- A. Therapy-mental health-interpersonal relations -- Kurt Lewin's influence on the field of mental health -- Understanding enrichment and therapy in marriage: The legacy of Kurt Lewin -- Lewinian theory in clinical practice -- Kurt Lewin: Intergroup relations and applications in current action research -- Application of Lewin's life space concept to the individual and group-as-a-whole systems in group psychotherapy -- B. Edúcation -- Action research as a guiding principle in an educational curriculum: The Lincoln University Master's Program in Human Services -- Kurt Lewin's influence on business education -- Children in cooperation and competition: The role of entitlement and deservedness -- Participants as consultants to themselves -- C. Organizational and human resources development -- The quality circle phenomenon -- Using graduate students as consultants to teach action research to residence hall staff -- Teaching force field analysis: A suggested training design -- Utilizing Lewinian principles for an institutional planning process within a medical school -- Organizational processes in a University department: A report of an action research and organizational development project -- D. Community psychology and community action -- Environmental psychology and action research: Lewin's legacy -- Community action research in North Philadelphia -- Report of an action research project: The Hunting Park community leaders survey - problems and prospects for park preservation -- A practical theory for optimal intergroup-initiated encounters: The Arab-Jewish case -- E. Research lines -- Support, reference, and gatekeeping functions within the interpersonal field: Lewin contributions -- A continuation of Lewinian research in the study of cooperation and competition -- New paradigm research -- A neo-Lewinian action research method -- The effects of affirmative action on minority persons: Research in the Lewinian tradition.