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Author (up) Title Year Publication Serial Volume Pages
Limongelli L; Boysen ST; Visalberghi E Comprehension of cause-effect relations in a tool-using task by chimpanzees (Pan troglodytes) 1995 J. Comp. Psychol. 3015 109 18
Povinelli DJ; Nelson KE; Boysen ST Comprehension of role reversal in chimpanzees: evidence of empathy? 1992 Animal Behaviour. 3031 43 633
Povinelli DJ; Nelson KE; Boysen ST Inferences about guessing and knowing in chimpanzees (Pan troglodytes) 1990 J. Comp. Psychol. 3030 104 203