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Functional Analysis of the Larval Feeding Circuit in Drosophila

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Published on: November 19, 2013

Disgust: evolved function and structure.

Joshua M Tybur¹, Debra Lieberman, Robert Kurzban

¹Department of Social and Organizational Psychology, VU University Amsterdam, the Netherlands. j.m.tybur@vu.nl

Psychological Review

|December 5, 2012

Summary

Disgust evolved to prevent disease and guide decisions in mate choice and morality. This framework proposes distinct information processing systems for each function, advancing disgust research.

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Area of Science:

Evolutionary Psychology
Cognitive Science
Behavioral Neuroscience

Background:

Research on the emotion of disgust has significantly increased.
A unified theoretical framework for disgust's evolved functions is lacking.
Existing theories primarily focus on pathogen avoidance.

Purpose of the Study:

To present a coherent theoretical framework for understanding the evolved functions of disgust.
To propose that disgust regulates decisions beyond pathogen avoidance, specifically in mate choice and morality.
To introduce a framework emphasizing information processing and computational mechanisms.

Main Methods:

Analysis of evolved functions at two levels: evolved function and information processing.
Positing distinct information processing systems for each proposed evolved function.
Integrating function-relevant information and accounting for system trade-offs.

Main Results:

Suggests disgust evolved not only for pathogen avoidance but also to regulate mate choice and moral decisions.
Proposes specific computational mechanisms underlying these disgust functions.
Offers a framework for future empirical and theoretical investigations into disgust.

Conclusions:

A unified framework for disgust's evolved functions is proposed, integrating pathogen avoidance, mate choice, and morality.
Focusing on computational mechanisms provides a novel perspective on disgust.
This framework can stimulate new research directions in the study of disgust.