title: Testing the psychological pain hypothesis for postnatal depression: Reproductive success versus evidence of design.
authors.affiliation: Department of Anthropology, Washington State University, 14204 NE Salmon Creek Avenue, Vancouver, WA 98686-9600, USA; edhagen@wsu.edu.
authors.forename: Edward H
authors.initials: EH
authors.lastname: Hagen
authors.affiliation: Department of Biology, The University of New Mexico, MSC03 2020, 1 University of New Mexico, Albuquerque, NM 87131-0001, USA.
authors.forename: Randy
authors.initials: R
authors.lastname: Thornhill