Filtering by: Committee Hampton, Robert, Emory University Remove constraint Committee: Hampton, Robert, Emory University Committee Moore, Donald, Smithsonian Institutions Remove constraint Committee: Moore, Donald, Smithsonian Institutions Keyword cooperation Remove constraint Keyword: cooperation Keyword elephant Remove constraint Keyword: elephant Research Field Psychology, Experimental Remove constraint Research Field: Psychology, Experimental Research Field Psychology, Psychobiology Remove constraint Research Field: Psychology, Psychobiology