Widely regarded as the definitive reference, this volume comprehensively examines the psychological processes associated with religion and spirituality. Leading scholars from multiple psychological subdisciplines present developmental, cognitive, social psychological, cultural, and clinical perspectives on this core aspect of human experience. The forms and functions of religious practices and rituals, conversion experiences, and spiritual struggles are explored. Other key topics include religion as a meaning system, religious influences on prosocial and antisocial behavior, and connections to health, coping, and psychotherapy.