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  1.  14
    Music as a Coevolved System for Social Bonding.Patrick E. Savage, Psyche Loui, Bronwyn Tarr, Adena Schachner, Luke Glowacki, Steven Mithen & W. Tecumseh Fitch - 2021 - Behavioral and Brain Sciences 44:1-36.
    Why do humans make music? Theories of the evolution of musicality have focused mainly on the value of music for specific adaptive contexts such as mate selection, parental care, coalition signaling, and group cohesion. Synthesizing and extending previous proposals, we argue that social bonding is an overarching function that unifies all of these theories, and that musicality enabled social bonding at larger scales than grooming and other bonding mechanisms available in ancestral primate societies. We combine cross-disciplinary evidence from archeology, anthropology, (...)
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  2.  43
    Intergroup Aggression in Chimpanzees and War in Nomadic Hunter-Gatherers.Richard W. Wrangham & Luke Glowacki - 2012 - Human Nature 23 (1):5-29.
    Chimpanzee and hunter-gatherer intergroup aggression differ in important ways, including humans having the ability to form peaceful relationships and alliances among groups. This paper nevertheless evaluates the hypothesis that intergroup aggression evolved according to the same functional principles in the two species—selection favoring a tendency to kill members of neighboring groups when killing could be carried out safely. According to this idea chimpanzees and humans are equally risk-averse when fighting. When self-sacrificial war practices are found in humans, therefore, they result (...)
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  3.  26
    The Role of Rewards in Motivating Participation in Simple Warfare.Luke Glowacki & Richard W. Wrangham - 2013 - Human Nature 24 (4):444-460.
    In the absence of explicit punitive sanctions, why do individuals voluntarily participate in intergroup warfare when doing so incurs a mortality risk? Here we consider the motivation of individuals for participating in warfare. We hypothesize that in addition to other considerations, individuals are incentivized by the possibility of rewards. We test a prediction of this “cultural rewards war-risk hypothesis” with ethnographic literature on warfare in small-scale societies. We find that a greater number of benefits from warfare is associated with a (...)
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  4.  15
    Self-Interest and the Design of Rules.Manvir Singh, Richard Wrangham & Luke Glowacki - 2017 - Human Nature 28 (4):457-480.
    Rules regulating social behavior raise challenging questions about cultural evolution in part because they frequently confer group-level benefits. Current multilevel selection theories contend that between-group processes interact with within-group processes to produce norms and institutions, but within-group processes have remained underspecified, leading to a recent emphasis on cultural group selection as the primary driver of cultural design. Here we present the self-interested enforcement hypothesis, which proposes that the design of rules importantly reflects the relative enforcement capacities of competing parties. We (...)
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  5.  8
    Self-Interested Agents Create, Maintain, and Modify Group-Functional Culture.Manvir Singh, Luke Glowacki & Richard W. Wrangham - 2016 - Behavioral and Brain Sciences 39.
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  6. Toward Inclusive Theories of the Evolution of Musicality.Patrick E. Savage, Psyche Loui, Bronwyn Tarr, Adena Schachner, Luke Glowacki, Steven Mithen & W. Tecumseh Fitch - 2021 - Behavioral and Brain Sciences 44.
    We compare and contrast the 60 commentaries by 109 authors on the pair of target articles by Mehr et al. and ourselves. The commentators largely reject Mehr et al.'s fundamental definition of music and their attempts to refute our social bonding hypothesis, byproduct hypotheses, and sexual selection hypotheses for the evolution of musicality. Instead, the commentators generally support our more inclusive proposal that social bonding and credible signaling mechanisms complement one another in explaining cooperation within and competition between groups in (...)
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  7.  3
    Reasons to Strike First.William Buckner & Luke Glowacki - 2019 - Behavioral and Brain Sciences 42.
    De Dreu and Gross predict that attackers will have more difficulty winning conflicts than defenders. As their analysis is presumed to capture the dynamics of decentralized conflict, we consider how their framework compares with ethnographic evidence from small-scale societies, as well as chimpanzee patterns of intergroup conflict. In these contexts, attackers have significantly more success in conflict than predicted by De Dreu and Gross's model. We discuss the possible reasons for this disparity.
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  8.  2
    The Cultural Evolution of War Rituals.Luke Glowacki - 2018 - Behavioral and Brain Sciences 41.
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