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The HoneyComb Paradigm for Research on Collective Human Behavior
Published on: January 19, 2019
Rationality in collective decision-making by ant colonies.
Susan C Edwards1, Stephen C Pratt
1Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA.
Proceedings. Biological Sciences
|July 24, 2009
Summary
Insect colonies of Temnothorax ants avoid irrational decision-making, unlike individual animals. Their decentralized, self-organizing choices prevent cognitive biases in nest site selection.
Area of Science:
- Animal behavior
- Ecology
- Cognitive science
Background:
- Economic models assume rational animal decision-making based on intrinsic fitness.
- Observed irrationality in animal choices, potentially due to cognitive shortcuts like comparison.
- The significance of irrationality and its link to cognitive mechanisms are debated.
Purpose of the Study:
- To investigate irrationality in collective animal decisions within insect societies.
- To test if Temnothorax ant colonies exhibit irrationality in nest site selection.
- To explore how decentralized decision-making in colonies might prevent cognitive biases.
Main Methods:
- Studied Temnothorax ant colonies choosing between two multi-attribute nest sites.
- Compared colony behavior to individual animal responses in similar choice scenarios.
- Introduced a third, less attractive option to test for preference shifts.
Main Results:
- Temnothorax ant colonies did not exhibit irrational preference changes when presented with an additional option.
- Unlike individual animals, colonies remained consistent in their choices.
- No evidence of comparative evaluation leading to systematic errors was found.
Conclusions:
- Decentralized decision-making in Temnothorax ant colonies confers immunity to irrationality.
- Self-organization from local interactions, rather than individual site comparison, prevents cognitive biases.
- This collective strategy highlights adaptive benefits of decentralized systems in avoiding individual cognitive limitations.
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