Böhm, Robert; Glowacki, Luke; Rusch, Hannes; … - 2024
capacity for war is closely linked to our exceptionally cooperative abilities [5, 6]. The parochial altruism model formally … describes how within-group cooperation and between-group competition could be dynamically intertwined [7, 8, 9]. However … corroborating the model, we find that our new measures which cleanly separate interindividual altruism from intergroup parochialism …