We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleResponses to quantity: Perceptual versus cognitive mechanisms in chimpanzees (Pan troglodytes).AuthorsBoysen, Sarah T.; Berntson, Gary G.PublicationJournal of Experimental Psychology: Animal Behavior Processes, 1995, Vol 21, Issue 1, p82ISSN0097-7403Publication typearticleDOI10.1037/0097-7403.21.1.82