What makes humans unique? For centuries, scholars from many different fields have been struggling to find the answer to this question. A welcomed attempt in this direction is Mind the Gap. Tracing the Origins of Human Universals, edited by Peter Kappeler and Joan Silk, a collection of contributions dealing with the issue of human uniqueness from a multidisciplinary perspective. The book opens with a brief review (Chapter 1, by Kappeler, Silk, Burkart, and van Schaik) of the many behavioral and cognitive features present in humans but not in great apes (such as cumulative material culture, social norms, language, cooperation, shared intentionality). Although nonhuman primates share a large part of their genome with humans and although it is unjustified to separate humans and chimpanzees at the genus level, undoubtedly there is a deep cognitive and behavioral gap between us and our closest relatives. Kappeler and coauthors highlight that the problem of what underlies human uniqueness is almost as old as the history of humanity, leaving open the question of why, in a relatively short period of time, only humans developed traits that separated them from other animals. After this introductive chapter, the first part of the book focuses on the evolution of pair bonding in humans. In Chapter 2, Chapais argues that reciprocal exogamy, i.e., intermarriage between members of distinct groups, is a defining characteristic of human societies. During hominid evolution, the transition from multimale– multifemale groups to enduring breeding bonds was the most important event that promoted exogamy. Subsequently, when delayed maturation evolved and the costs of maternity increased, paternal care and parental collaboration in raising the offspring emerged. Interestingly, however, in Chapter 4, Mulder points out that the roles of men and women in human societies are not so strictly defined, as shown, for example, by the Pimbwe, a Tanzanian population where, contrary to classic anthropological findings, women benefit more from multiple marriages than do