Definition
A coalition is defined as an aggressive attack of two or more individuals against one or more targets. Most frequently coalitions involve two individuals aggressing against a common target. Coalitions are prevalent throughout the animal kingdom and their frequency between males is surprising as males are most frequently the dispersing sex and thus there should be no kin-related benefits of cooperation. The formation of a coalition can be opportunistic whereby one individual joins one of two individuals during a dyadic aggression. Coalitions can be very basic and involve no communication between the coalition partners and an individual purely intervenes in an on-going aggression. Alternatively, coalitions can be coordinated attacks with individuals aggressing against a common target with similar forms of aggression and movement. These aggressions can involve...
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Young, C. (2018). Feelings of Excitement and Brotherhood. In: Shackelford, T., Weekes-Shackelford, V. (eds) Encyclopedia of Evolutionary Psychological Science. Springer, Cham. https://doi.org/10.1007/978-3-319-16999-6_962-1
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