Distinct Developmental Trajectories for Risky and Impulsive Decision-making in Chimpanzees
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Human adolescence is characterized by a suite of changes in decision-making and emotional regulation that promote risky and impulsive behavior. Accumulating evidence suggests that behavioral and physiological shifts seen in human adolescence are shared by some primates, yet it is unclear if the same cognitive mechanisms are recruited. We examined developmental changes in risky choice, intertemporal choice, and emotional responses to decision outcomes in chimpanzees, our closest-living relatives. We found that adolescent chimpanzees were more risk-seeking than adults, as in humans. However, chimpanzees showed no developmental change in intertemporal choice, unlike humans, although younger chimpanzees did exhibit elevated emotional reactivity to waiting compared to adults. Comparisons of cortisol and testosterone indicated robust age-related variation in these biomarkers, and patterns of individual differences in choices, emotional reactivity, and hormones also supported a developmental dissociation between risk and choice impulsivity. These results show that some but not all core features of human adolescent decision-making are shared with chimpanzees. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Charvet C, de Sousa A, Vassilopoulos T Brain Res Bull. 2025; 221:111212.
PMID: 39824228 PMC: 11904871. DOI: 10.1016/j.brainresbull.2025.111212.
Age-related physiological dysregulation progresses slowly in semi-free-ranging chimpanzees.
Cole M, Barnes P, Monroe I, Rukundo J, Emery Thompson M, Rosati A Evol Med Public Health. 2024; 12(1):129-142.
PMID: 39239461 PMC: 11375048. DOI: 10.1093/emph/eoae010.
Dynamic inconsistency in great apes.
Salas-Morellon L, Palacios-Huerta I, Call J Sci Rep. 2024; 14(1):18130.
PMID: 39103396 PMC: 11300655. DOI: 10.1038/s41598-024-67771-7.
Flexible information-seeking in chimpanzees.
Rosati A, Felsche E, Cole M, Atencia R, Rukundo J Cognition. 2024; 251:105898.
PMID: 39059117 PMC: 11343684. DOI: 10.1016/j.cognition.2024.105898.
Diaz A, Hernandez-Pacheco R, Rosati A Am J Primatol. 2024; 87(2):e23660.
PMID: 38961748 PMC: 11698962. DOI: 10.1002/ajp.23660.