The evolutionary view of this emotion that considers that disgust evolved to help humans avoid physical contact with poisons, parasites and pathogens. In this post I will comment on an article (chapter of book in reality) that proposes an alternative hypothesis. According to this point of view, disgust appeared to a large extent as a functional response to prevent contact with foreigners or with people acting in a non-normative manner, that is, in a manner not in accordance with the norms of the group.

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