We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAmygdala size and hypothalamus size predict social play frequency in nonhuman primates: A comparative analysis using independent contrasts.AuthorsLewis, Kerrie P.; Barton, Robert A.PublicationJournal of Comparative Psychology, 2006, Vol 120, Issue 1, p31ISSN0735-7036Publication typearticleDOI10.1037/0735-7036.120.1.31