Abstract
The purpose of the present study was to examine whether rhesus monkeys remember information about their own agency—along with spatial, temporal and contextual properties—from a previously experienced event. In Experiment 1, rhesus monkeys (n = 4) used symbols to reliably indicate whether they had performed or observed an event on a computer screen. In Experiment 2, naïve and experienced monkeys (n = 8) reported agency information when stringent controls for perceptual and proprioceptive cues were included. In Experiment 3, five of the monkeys completed a task in which they reported agency information along with spatial and temporal features of events. Two monkeys performed this agency discrimination when they could not anticipate which memory test they would receive. There was also evidence that these features were integrated in memory. Implications of this research are discussed in relation to working memory, episodic memory and self-awareness in nonhuman animals.
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Acknowledgements
This study was funded by the National Institute of Child Health and Human Development (#HD060563) and Georgia State University. The authors kindly acknowledge Ted Evans for his assistance with data collection throughout this project. We would also like to acknowledge the valuable contributions of Ken Sayers, Charles Menzel, Sarah Brosnan and Rebecca Williamson in providing thoughtful feedback in support of this research.
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Hoffman, M.L., Beran, M.J. & Washburn, D.A. Rhesus monkeys (Macaca mulatta) remember agency information from past events and integrate this knowledge with spatial and temporal features in working memory. Anim Cogn 21, 137–153 (2018). https://doi.org/10.1007/s10071-017-1147-x
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DOI: https://doi.org/10.1007/s10071-017-1147-x