Reversal Theory is a new general theory of motivation, emotion, personality, psychopathology and stress which challenges previous ideas in these fields and sets up an unusually broad and integrative conceptual framework of its own. The papers in the six sections which make up this volume are concerned with: – developing the theory itself – looking at different research areas, or psychological problems, from the perspective of reversal theory – describing empirical studies of different kinds aimed at testing ideas drawn from the theory.