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Related Experiment Video

Updated: Jun 2, 2026

The HoneyComb Paradigm for Research on Collective Human Behavior

The HoneyComb Paradigm for Research on Collective Human Behavior

Published on: January 19, 2019

Collective irrationality and positive feedback.

Stamatios C Nicolis¹, Natalia Zabzina, Tanya Latty

¹Mathematics Department, Uppsala University, Uppsala, Sweden. snicolis@math.uu.se

|May 5, 2011

Summary

This summary is machine-generated.

Group decisions in species like ants and slime molds rely on positive feedback. Optimal feedback strength maximizes the chance of selecting the best option, but apparent irrationality arises when the number of choices changes.

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Area of Science:

Collective decision-making
Behavioral ecology
Mathematical modeling of biological systems

Background:

Many species and biological processes utilize positive feedback mechanisms for decision-making.
Previous studies explored rational decision-making in ants and slime molds with multiple options.

Purpose of the Study:

To model and analyze the role of positive feedback strength in group decision-making.
To investigate how feedback strength influences the selection of optimal choices.
To reframe apparent 'irrationalities' in collective behavior as a consequence of feedback mechanisms.

Main Methods:

Utilized a generic, experimentally validated model of positive feedback in group decision-making.
Analyzed the relationship between feedback strength, number of options, and probability of choosing the best option.

Main Results:

The probability of selecting the best option is critically dependent on the strength of positive feedback.
An optimal feedback strength exists to maximize the likelihood of choosing the best option.
This optimal strength varies with the number of available options, leading to context-dependent preferences.

Conclusions:

Apparent 'rational' or 'irrational' preferences in collective decision-making are a necessary outcome of using positive feedback.
Positive feedback serves as a heuristic for fast and accurate group decisions.
The susceptibility to apparent irrationality is an inherent characteristic when studying collective behavior under specific experimental conditions.