From foremost authorities in the field, this comprehensive volume synthesizes the breadth of current knowledge on the psychological processes underlying spirituality, religious behavior, and religious experience. Presented are cutting-edge theories, conceptual frameworks, methodologies, and empirical findings emerging from all psychological subdisciplines. Coverage includes the neural and cognitive bases of religiousness; social, personality, and developmental issues; religion as a meaning system; and implications for behavior, mental health, and clinical practice. Seamlessly edited, the Handbook provides a definitive portrait of the current state of the science, fosters the development of integrative theory, and identifies vital directions for future research.