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Capuchin monkeys (sometimes) go when they know: Confidence movements in Sapajus apella.
Cognition. 2020 06; 199:104237.C

Abstract

To test for evidence of metacognition in capuchin monkeys (Sapajus apella), we analyzed confidence movements using a paradigm adapted from research with chimpanzees. Capuchin monkeys provide an interesting model species for the comparative assessment of metacognition as they show limited evidence of such cognitive-monitoring processes in a variety of metacognition paradigms. Here, monkeys were presented with a computerized delayed matching-to-sample (DMTS) memory test in one location but were rewarded for correct responses in a separate location. Movements could be made from one location to the other at any time, but movements between a response and reward feedback may reflect confidence in the accuracy of the response. Critically, DMTS tests included occasional "no sample" trials where monkeys' performance was at chance when the trial started without a sample and a 1-s interval to the response options. We predicted that monkeys would (1) perform less accurately (and less confidently) at longer retention intervals, (2) move to the dispenser early more often on trials completed correctly than incorrectly, and (3) show a relation between faster response latency and early movements. Analyses of response times and "go" or "no go" confidence movements before feedback to the reward location suggested that the monkeys were capable of monitoring confidence in their responses. However, their confidence movements were less precise and less flexible than chimpanzees. Overall, this paradigm can reveal potential metacognitive abilities in nonhuman animals that otherwise demonstrate these abilities inconsistently.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Smith TR
Kansas State University, United States of America. Electronic address: smithtr@ksu.edu.
Parrish AE
The Citadel, United States of America.
Creamer C
Georgia State University, United States of America.
Rossettie M
Georgia State University, United States of America.
Beran MJ
Georgia State University, United States of America.

MeSH

AnimalsCebusMemoryMetacognitionMovementSapajus apella

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

32112968

Citation

Smith, Travis R., et al. "Capuchin Monkeys (sometimes) Go when They Know: Confidence Movements in Sapajus Apella." Cognition, vol. 199, 2020, p. 104237.
Smith TR, Parrish AE, Creamer C, et al. Capuchin monkeys (sometimes) go when they know: Confidence movements in Sapajus apella. Cognition. 2020;199:104237.
Smith, T. R., Parrish, A. E., Creamer, C., Rossettie, M., & Beran, M. J. (2020). Capuchin monkeys (sometimes) go when they know: Confidence movements in Sapajus apella. Cognition, 199, 104237. https://doi.org/10.1016/j.cognition.2020.104237
Smith TR, et al. Capuchin Monkeys (sometimes) Go when They Know: Confidence Movements in Sapajus Apella. Cognition. 2020;199:104237. PubMed PMID: 32112968.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Capuchin monkeys (sometimes) go when they know: Confidence movements in Sapajus apella. AU - Smith,Travis R, AU - Parrish,Audrey E, AU - Creamer,Courtney, AU - Rossettie,Mattea, AU - Beran,Michael J, Y1 - 2020/02/26/ PY - 2019/08/20/received PY - 2020/02/09/revised PY - 2020/02/11/accepted PY - 2020/3/1/pubmed PY - 2021/5/28/medline PY - 2020/3/1/entrez KW - Capuchin monkeys KW - Confidence movement KW - Metacognition KW - Uncertainty monitoring SP - 104237 EP - 104237 JF - Cognition JO - Cognition VL - 199 N2 - To test for evidence of metacognition in capuchin monkeys (Sapajus apella), we analyzed confidence movements using a paradigm adapted from research with chimpanzees. Capuchin monkeys provide an interesting model species for the comparative assessment of metacognition as they show limited evidence of such cognitive-monitoring processes in a variety of metacognition paradigms. Here, monkeys were presented with a computerized delayed matching-to-sample (DMTS) memory test in one location but were rewarded for correct responses in a separate location. Movements could be made from one location to the other at any time, but movements between a response and reward feedback may reflect confidence in the accuracy of the response. Critically, DMTS tests included occasional "no sample" trials where monkeys' performance was at chance when the trial started without a sample and a 1-s interval to the response options. We predicted that monkeys would (1) perform less accurately (and less confidently) at longer retention intervals, (2) move to the dispenser early more often on trials completed correctly than incorrectly, and (3) show a relation between faster response latency and early movements. Analyses of response times and "go" or "no go" confidence movements before feedback to the reward location suggested that the monkeys were capable of monitoring confidence in their responses. However, their confidence movements were less precise and less flexible than chimpanzees. Overall, this paradigm can reveal potential metacognitive abilities in nonhuman animals that otherwise demonstrate these abilities inconsistently. SN - 1873-7838 UR - https://www.unboundmedicine.com/medline/citation/32112968/Capuchin_monkeys__sometimes__go_when_they_know:_Confidence_movements_in_Sapajus_apella_ DB - PRIME DP - Unbound Medicine ER -