Competitive social strategies in groups of deprived and experienced rhesus monkeys

Anderson, Chelsea M.; Mason, William A.

doi:10.1002/dev.420110402

Cited by 83 publications

(18 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consistent with initial predictions, MR monkeys were found to rank significantly higher than their SPR cage-mates when assessed for relative status both as juveniles and as adults. This finding is also consistent with earlier work that suggested that social deprivation early in life leads to subsequent deficits in normative social functioning (Alexander & Harlow, 1965;Anderson & Mason, 1978;Champoux et al, 1999;Sackett, 1967). The results highlight the importance of adult presence on normative social development and suggest that early parental absence may have long-lasting effects on social development.…”

Section: Discussionsupporting

confidence: 92%

Long‐term effects of infant rearing condition on the acquisition of dominance rank in juvenile and adult rhesus macaques (Macaca mulatta)

Bastian

Sponberg

Suomi

et al. 2002

Developmental Psychobiology

View full text Add to dashboard Cite

We examined the effects of early rearing experience on the development of dominance status in 53 juvenile (age 3) and then in 38 adult (ages 5-8) rhesus macaques. Based on previous research investigating the behavioral outcomes of nursery-rearing, we predicted that mother-reared (MR) monkeys would outrank peer-only reared (PR) monkeys, which would in turn outrank surrogate/peer-reared (SPR) subjects. Juvenile MR and PR subjects did not differ in ranks, but monkeys from both rearing backgrounds outranked SPR cage-mates at age 3. Independent of rearing condition, high-ranking juveniles gained the most weight between ages 1-3, suggesting that low status may be associated with decreases in early weight gain. Adult MR subjects outranked both PR and SPR subjects, with PR animals occupying intermediate ranks. These results indicate that impoverished early experiences, such as adult absence and limited social interaction, are useful predictors of future social success in rhesus macaques.

show abstract

Section: Discussionsupporting

confidence: 92%

Long‐term effects of infant rearing condition on the acquisition of dominance rank in juvenile and adult rhesus macaques (Macaca mulatta)

Bastian

Sponberg

Suomi

et al. 2002

Developmental Psychobiology

View full text Add to dashboard Cite

show abstract

“…The preference to withhold reward from others in this particular context may reflect a potential diminishment of reward during simultaneous consumption, possibly due to the uncertainty of the quantity or quality of reward delivered to others. Reward withholding behavior may also arise from rhesus monkeys’ natural competitive tendencies (Anderson and Mason, 1978). For instance, from an ecological standpoint, sharing food with other individuals always reduces the amount of potential food available to oneself.…”

Section: Discussionmentioning

confidence: 99%

Vicarious Reinforcement in Rhesus Macaques (Macaca Mulatta)

Chang¹,

Winecoff²,

Platt³

2011

Front. Neurosci.

111

121

View full text Add to dashboard Cite

What happens to others profoundly influences our own behavior. Such other-regarding outcomes can drive observational learning, as well as motivate cooperation, charity, empathy, and even spite. Vicarious reinforcement may serve as one of the critical mechanisms mediating the influence of other-regarding outcomes on behavior and decision-making in groups. Here we show that rhesus macaques spontaneously derive vicarious reinforcement from observing rewards given to another monkey, and that this reinforcement can motivate them to subsequently deliver or withhold rewards from the other animal. We exploited Pavlovian and instrumental conditioning to associate rewards to self (M1) and/or rewards to another monkey (M2) with visual cues. M1s made more errors in the instrumental trials when cues predicted reward to M2 compared to when cues predicted reward to M1, but made even more errors when cues predicted reward to no one. In subsequent preference tests between pairs of conditioned cues, M1s preferred cues paired with reward to M2 over cues paired with reward to no one. By contrast, M1s preferred cues paired with reward to self over cues paired with reward to both monkeys simultaneously. Rates of attention to M2 strongly predicted the strength and valence of vicarious reinforcement. These patterns of behavior, which were absent in non-social control trials, are consistent with vicarious reinforcement based upon sensitivity to observed, or counterfactual, outcomes with respect to another individual. Vicarious reward may play a critical role in shaping cooperation and competition, as well as motivating observational learning and group coordination in rhesus macaques, much as it does in humans. We propose that vicarious reinforcement signals mediate these behaviors via homologous neural circuits involved in reinforcement learning and decision-making.

show abstract

“…Although some procedures, such as pairing a previously isolated infant with a non-isolated same-aged monkey “therapist” can reverse some of the social deficits displayed by isolates (Novak and Harlow 1975; Suomi and Harlow 1972), these individuals can rarely be successfully reintegrated into a complex social group with mother-reared individuals (Anderson and Mason 1974; 1978). Other environmental or pharmacological treatments may temporarily reduce abnormal behavior but the isolation syndrome usually returns if the treatment is withdrawn (Kraemer 1992).…”

Section: Primate Modelsmentioning

confidence: 99%

Identifying key features of early stressful experiences that produce stress vulnerability and resilience in primates

Parker¹,

Maestripieri²

2011

Neuroscience & Biobehavioral Reviews

170

132

View full text Add to dashboard Cite

This article examines the complex role of early stressful experiences in producing both vulnerability and resilience to later stress-related psychopathology in a variety of primate models of human development. Two types of models are reviewed: Parental Separation Models (e.g., isolate-rearing, peer-rearing, parental separations, and stress inoculation) and Maternal Behavior Models (e.g., foraging demands, variation in maternal style, and maternal abuse). Based on empirical evidence, it is argued that early life stress exposure does not increase adult vulnerability to stress-related psychopathology as a linear function, as is generally believed, but instead reflects a quadratic function. Features of early stress exposure including the type, duration, frequency, ecological validity, sensory modality, and developmental timing, within and between species, are identified to better understand how early stressful experiences alter neurobiological systems to produce such diverse developmental outcomes. This article concludes by identifying gaps in our current knowledge, providing directions for future research, and discussing the translational implications of these primate models for human development and psychopathology.

show abstract

Competitive social strategies in groups of deprived and experienced rhesus monkeys

Cited by 83 publications

References 13 publications

Long‐term effects of infant rearing condition on the acquisition of dominance rank in juvenile and adult rhesus macaques (Macaca mulatta)

Long‐term effects of infant rearing condition on the acquisition of dominance rank in juvenile and adult rhesus macaques (Macaca mulatta)

Vicarious Reinforcement in Rhesus Macaques (Macaca Mulatta)

Identifying key features of early stressful experiences that produce stress vulnerability and resilience in primates

Contact Info

Product

Resources

About