The Science of Religion, Spirituality, and Existentialism presents in-depth analysis of the core issues in existential psychology, their connections to religion and spirituality (e.g., religious concepts, beliefs, identities, and practices), and their diverse outcomes (e.g., psychological, social, cultural, and health). Leading scholars from around the world cover research exploring how fundamental existential issues are both cause and consequence of religion and spirituality, informed by research data spanning multiple levels of analysis, such as: evolution; cognition and neuroscience; emotion and motivation; personality and individual differences; social and cultural forces; physical and mental health; among many others. The Science of Religion, Spirituality, and Existentialism explores known contours and emerging frontiers, addressing the big question of why religious belief remains such a central feature of the human experience.