Depth vs. breadth: lessons from the Evolution of Religion and Morality project

The Evolution of Religion and Morality project highlights the critical need for, and signi fi cant chal-lenges in, building and executing global research e ff orts that are both rigorous and meaningful. Although this special issue is meant to signal the conclusion of this research e ff ort, the authors are candid that the Evolution of Religion and Morality project raises perhaps more questions than it has yet answered about the nature of belief in moralizing gods and the evolution of morality. The project also raises the need for clarity in research programs that incorporate variation in cultural beliefs and practices.