November 15, 2023 Hao, Y., Armbruster, D., Cronk, L., & Aktipis, C. A. (2015). Need-based transfers on a network: A model of risk-pooling in ecologically volatile environments. Evolution and Human Behavior, 36(4), 265–273. Home » Hao, Y., Armbruster, D., Cronk, L., & Aktipis, C. A. (2015). Need-based transfers on a network: A model of risk-pooling in ecologically volatile environments. Evolution and Human Behavior, 36(4), 265–273.