Cooperative pulling paradigm
Experimental design
Why this is trending
Interest in “Cooperative pulling paradigm” spiked on Wikipedia on 2026-07-21.
Sudden spikes in Wikipedia readership generally point to a newsworthy event or emerging public conversation that piques widespread curiosity.
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Key Takeaways
- The cooperative pulling paradigm is an experimental design in which two or more animals pull rewards toward themselves via an apparatus that they cannot successfully operate alone.
- The type of apparatus used in cooperative pulling experiments can vary.
- The standard apparatus is one in which a single string or rope is threaded through loops on a movable platform.
- Only by pulling together in coordination can the participants be successful; success by chance is highly unlikely.
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Source summary
WikipediaThe cooperative pulling paradigm is an experimental design in which two or more animals pull rewards toward themselves via an apparatus that they cannot successfully operate alone. Researchers (ethologists, comparative psychologists, and evolutionary psychologists) use cooperative pulling experiments to try to understand how cooperation works and how and when it may have evolved.
The type of apparatus used in cooperative pulling experiments can vary. Researcher Meredith Crawford, who invented the experimental paradigm in 1937, used a mechanism consisting of two ropes attached to a rolling platform that was too heavy to be pulled by a single chimpanzee. The standard apparatus is one in which a single string or rope is threaded through loops on a movable platform. If only one participant pulls the string, it comes loose and the platform can no longer be retrieved. Only by pulling together in coordination can the participants be successful; success by chance is highly unlikely. Some researchers have designed apparatus that involve handles instead of ropes.
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