Video 2 from Comparing physical and social cognitive skills in macaque species with different degrees of social tolerance

<b>A Tonkean macaque performing in a Transposition (Double baited condition) trial.</b> In the Transposition task the position of the baited cup was switched with the position of the other cups. The subjects had to follow these transpositions to locate the reward. In the <i>Double baited condition</i>, the experimenter switched the position of the baited cup with one of the empty cups. She then switched the position of the baited cup with one of the empty cups one more time. After the transpositions were completed the subject was allowed to choose one cup. A correct response was scored if the monkey chose the baited cup first.