Biodemography and Evolution Barrett, H.C., Bolyanatz, A., Crittenden, A., Fessler, D., Fitzpatrick, S., Gurven, M., Henrich, J., Kanovsky, M., Kushnick, G., Pisor, A., Scelza, B., Stich, S., von Rueden, C., Zhao, W., Laurence, S. 2016. PNAS 113(17): 4688-4693. 2016 Michael Gurven