Abstract
Responses to novel objects by pair-livingSaimiri andCallicebus and grouplivingSaimiri were investigated in two experiments. In the first, titis and squirrel monkeys were tested in the presence and absence of an opposite-sexed pairmate. The species were differentially affected by the absence of the pairmate: titis of both sexes were distressed and object interest was attenuated; squirrel monkeys were not distressed and object scores (particularly females') increased. Nonsocial differences in object exploration principally involved the tempo and mode of investigation; squirrel monkeys were quicker and more vigorous than titis.
In the second experiment, presence of a novel object was found to attract and arouse grouplivingSaimiri, as indicated by the change in the frequency and nature of social interactions and spatial distribution. Within- and between-sex social interactions reflected the typical female nucleus-peripheral male pattern seen inSaimiri groups in other environments. Species differences in investigatory patterns were considered to be contributing elements in the maintenance of distinctive life-styles.
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Fragaszy, D.M., Mason, W.A. Response to novelty inSaimiri andCallicebus: Influence of social context. Primates 19, 311–331 (1978). https://doi.org/10.1007/BF02382800
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DOI: https://doi.org/10.1007/BF02382800