title: The ultimate and proximate underpinnings of social behavior.
authors.affiliation: Laboratory of Social Evolution and Behavior, The Rockefeller University, New York, NY 10065, USA dkronauer@rockefeller.edu joel.levine@utoronto.ca.
authors.forename: Daniel J C
authors.identifier: 0000-0002-4103-7729
authors.initials: DJ
authors.lastname: Kronauer
authors.affiliation: Department of Biology, University of Toronto at Mississauga, Mississauga, ON, Canada L5L1C6 dkronauer@rockefeller.edu joel.levine@utoronto.ca.
authors.forename: Joel D
authors.identifier: 0000-0002-6254-6274
authors.initials: JD
authors.lastname: Levine
mesh_terms: D000818:Animals; D005075:Biological Evolution; D012919:Social Behavior