Mother-Child Relation Concept, long-tailed Macaques
Trial: Choice between novel Mo/Ch pair and Mo/~Ch pair
Training Example: Mo/Da pair
“Mother-offspring pairs were differentiated from any other pair… cues other than the relation between individuals do not plausibly account for the result” (Dasser, V. 1988 Mapping social concepts in monkeys. In Machiavellian Intelligence and the Evolution of Intellect in Monkeys, Apes and Humans, Byrne and Whiten eds, Clarendon Press: Oxford, pp. 85-93 )