PubMed · 15008678
Object permanence in common marmosets (Callithrix jacchus).
Abstract
A series of 9 search tasks corresponding to the Piagetian Stages 3-6 of object permanence were administered to 11 common marmosets (Callithrix jacchus). Success rates varied strongly among tasks and marmosets, but the performances of most subjects were above chance level on the majority of tasks of visible and invisible displacements. Although up to 24 trials were administered in the tests, subjects did not improve their performance across trials. Errors were due to preferences for specific locations or boxes, simple search strategies, and attentional deficits. The performances of at least 2 subjects that achieved very high scores up to the successive invisible displacement task suggest that this species is able to represent the existence and the movements of unperceived objects.
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Natacha Mendes, Ludwig Huber. 2004. Object permanence in common marmosets (Callithrix jacchus).. https://doi.org/10.1037/0735-7036.118.1.103
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