NDLI: Disgust as an adaptive system for disease avoidance behaviour

Content Provider	PubMed Central
Author	Curtis, Valerie Barra, Mícheál De Aunger, Robert
Copyright Year	2010
Abstract	Disgust is an evolved psychological system for protecting organisms from infection through disease avoidant behaviour. This ‘behavioural immune system’, present in a diverse array of species, exhibits universal features that orchestrate hygienic behaviour in response to cues of risk of contact with pathogens. However, disgust is also a dynamic adaptive system. Individuals show variation in pathogen avoidance associated with psychological traits like having a neurotic personality, as well as a consequence of being in certain physiological states such as pregnancy or infancy. Three specialized learning mechanisms modify the disgust response: the Garcia effect, evaluative conditioning and the law of contagion. Hygiene behaviour is influenced at the group level through social learning heuristics such as ‘copy the frequent’. Finally, group hygiene is extended symbolically to cultural rules about purity and pollution, which create social separations and are enforced as manners. Cooperative hygiene endeavours such as sanitation also reduce pathogen prevalence. Our model allows us to integrate perspectives from psychology, ecology and cultural evolution with those of epidemiology and anthropology. Understanding the nature of disease avoidance psychology at all levels of human organization can inform the design of programmes to improve public health.
Related Links	http://dx.doi.org/10.1098/rstb.2010.0117
Ending Page	401
Page Count	13
Starting Page	389
File Format	PDF
ISSN	09628436
e-ISSN	14712970
Journal	Philosophical Transactions of the Royal Society B: Biological Sciences
Issue Number	1563
Volume Number	366
Language	English
Publisher	The Royal Society
Publisher Date	2011-02-12
Access Restriction	Open
Rights Holder	The Royal Society
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Biochemistry, Genetics and Molecular Biology Agricultural and Biological Sciences

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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