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Behavioral Assessment of Manual Dexterity in Non-Human Primates
Published on: November 11, 2011
Monkeys would rather see and do: preference for agentic control in rhesus macaques.
Greg Jensen1, Drew Altschul, Herbert Terrace
1Columbia University, New York City, NY, USA. belarius@gmail.com
Experimental Brain Research
|January 29, 2013
Summary
Rhesus monkeys preferred tasks where their actions controlled food rewards, demonstrating a preference for agentic control over externally caused outcomes. This preference was consistent regardless of reward timing or frequency.
Area of Science:
- Cognitive Science
- Animal Behavior
- Primate Studies
Background:
- Understanding the basis of goal-directed behavior is crucial in cognitive science.
- Investigating animal preferences can reveal fundamental aspects of motivation and control.
Purpose of the Study:
- To determine if rhesus monkeys prefer outcomes contingent on their actions versus externally caused outcomes.
- To explore the concept of agentic control in non-human primates.
Main Methods:
- Rhesus monkeys performed computerized tasks simulating billiards and arcade games.
- Reward delivery was contingent on subject actions in one condition and externally caused in another.
- Reward frequency and timing were controlled to isolate preference for control.
Main Results:
- Subjects consistently preferred scenarios where their actions led to food rewards (agentic control).
- This preference persisted even when reward schedules were identical across conditions.
- The findings indicate a robust preference for self-driven outcomes.
Conclusions:
- Rhesus monkeys exhibit a clear preference for agentic control, valuing the link between action and outcome.
- This suggests a fundamental motivation for goal-directed behavior in primates.
- The study highlights the importance of perceived control in reinforcement learning.
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