Related Experiment Video
Updated: Mar 13, 2026
10:29
A Complex Diving-For-Food Task to Investigate Social Organization and Interactions in Rats
Published on: May 8, 2021
4.8K
Social hierarchy influences monkeys' risky decisions
Naomi Chaix-Eichel1,2,3, Ayrton Guerillon4,5, Sacha Bourgeois-Gironde6,7,8
1Univ. Bordeaux, CNRS, IMN, UMR 5293, Bordeaux, France.
Communications Biology
|March 12, 2026
Summary
Social rank influences primate decision-making. Middle-ranking macaques showed less risk aversion for gains, with rank changes altering risk attitudes, highlighting social position
Area of Science:
- Primate cognition
- Behavioral economics
- Social neuroscience
Background:
- Prospect Theory describes primate economic decision-making patterns.
- Social hierarchy in primate groups may influence cognitive processes like economic decisions.
Purpose of the Study:
- Investigate the relationship between social hierarchy and decision-making parameters in primates.
- Examine how changes in social rank affect risk attitudes over time.
Main Methods:
- Utilized a unique dataset from semi-free ranging macaques over several years.
- Employed gambling tasks with hundreds of thousands of trials.
- Conducted longitudinal assessments of social hierarchy and decision parameters.
Main Results:
- Middle-ranking individuals exhibited reduced risk aversion for potential gains, but not losses.
- Longitudinal analyses revealed shifts in risk attitudes corresponding to changes in social rank.
- Age was associated with variations in loss aversion; sex had no significant impact.
Conclusions:
- Social position, not inherent traits, significantly influences primate decision-making patterns.
- Primate cognitive biases are flexible and adaptive, shaped by social structures.
- Findings offer insights into risk behavior in social species, including humans.
Related Concept Videos
01:28Causes of Social Behavior III: Biological and Environmental Influences
399
Social behavior is a complex phenomenon that arises from the interaction between biological predispositions and environmental influences. This intricate interplay shapes how individuals think, feel, and act in various social contexts. Understanding these mechanisms requires insights from psychology, neuroscience, genetics, and evolutionary theory.Environmental Influences on Social BehaviorEnvironmental factors, including temperature, odors, and visual stimuli, play a crucial role in shaping...
399
01:08Timing and Consequences on Behavior
566
In operant conditioning, the timing of reinforcement is crucial. For animals like rats and cats, immediate reinforcement (within a few seconds) is much more effective than delayed reinforcement. For example, a food reward for a rat needs to follow within 30 seconds of pressing a bar to be effective.
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant...
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant...
566
01:15Causes of Social Behavior II: Cognitive Processes
253
Cognitive processes affect social behavior by guiding how individuals perceive, interpret, and respond to social stimuli. These mental processes enable individuals to assess others' behaviors, attribute causes to their actions, and form expectations based on past experiences.Causes of Behavior and Social JudgmentsIndividuals determine the causes of others' behaviors by distinguishing between personal traits and external circumstances. For example, if a friend frequently arrives late, an...
253
01:20Decision Making
1.2K
Decision-making is a fundamental cognitive process that involves evaluating alternatives and selecting among them. This process can range from simple choices, such as deciding what to wear, to complex decisions, like choosing a major in college or a career path. The complexity of the decision often dictates the approach we use, which can be broadly categorized into two types: automatic and controlled decision-making.
Automatic decision-making is fast, intuitive, and relies on gut feelings...
Automatic decision-making is fast, intuitive, and relies on gut feelings...
1.2K
01:14Decision Making: Traditional Method
5.6K
The process of hypothesis testing based on the traditional method includes calculating the critical value, testing the value of the test statistic using the sample data, and interpreting these values.
First, a specific claim about the population parameter is decided based on the research question and is stated in a simple form. Further, an opposing statement to this claim is also stated. These statements can act as null and alternative hypotheses, out of which a null hypothesis would be a...
First, a specific claim about the population parameter is decided based on the research question and is stated in a simple form. Further, an opposing statement to this claim is also stated. These statements can act as null and alternative hypotheses, out of which a null hypothesis would be a...
5.6K
01:37Reason and Intuition
7.6K
The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the...
7.6K