title: Derex et al. reply.
authors.affiliation: University of Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
authors.forename: Maxime
authors.initials: M
authors.lastname: Derex
authors.affiliation: University of Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
authors.forename: Marie-Pauline
authors.initials: MP
authors.lastname: Beugin
authors.affiliation: University of Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
authors.forename: Bernard
authors.initials: B
authors.lastname: Godelle
authors.affiliation: 1] University of Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France [2] CNRS, Institute of Evolutionary Sciences, CC 065, Place Eugène Bataillon, Montpellier 34095, France.
authors.forename: Michel
authors.initials: M
authors.lastname: Raymond
mesh_terms: D003468:Cultural Evolution; D005717:Games, Experimental; D006801:Humans; D008297:Male; D011156:Population Density