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The structure and function of pathogen disgust.

Val Curtis1, Mícheál de Barra2

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Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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Summary
This summary is machine-generated.

Disgust evolved to help avoid infectious diseases, according to parasite avoidance theory. This study identified six key domains of pathogen disgust, reflecting distinct behavioral tasks for disease avoidance.

Keywords:
disease avoidancedisgustevolutionary psychologyinfectious disease

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Area of Science:

  • Evolutionary Psychology
  • Behavioral Biology
  • Pathogen Avoidance

Background:

  • Disgust responses are often linked to infectious disease cues.
  • Parasite avoidance theory posits disgust evolved to mitigate infection risk.
  • The structure of disgust should reflect strategies for avoiding disease transmission.

Purpose of the Study:

  • To investigate the structure of pathogen disgust based on disease transmission epidemiology.
  • To identify latent variables underlying disgust elicitors.
  • To test if disgust domains mirror infection transmission routes.

Main Methods:

  • Generated disgust-eliciting items based on disease transmission epidemiology.
  • Collected disgust ratings from a large North American/UK sample.
  • Performed factor analysis, using Velicer's MAP test, to determine the number of latent domains.

Main Results:

  • Factor analysis suggested six domains of pathogen disgust: atypical appearance, lesions, sex, hygiene, food, and animals.
  • The identified structure did not directly map to infection transmission routes.
  • The domains may represent distinct behavioral tasks for disease avoidance.

Conclusions:

  • The structure of pathogen disgust reflects evolved behavioral responses to environmental threats.
  • Regular infectious disease challenges may shape the domain structure of pathogen disgust.
  • Findings inform the understanding of disgust structure, function, and measurement in humans and animals.