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    Parasite-stress promotes in-group assortative sociality: The cases of strong family ties and heightened religiosity.Corey L. Fincher & Randy Thornhill - 2012 - Behavioral and Brain Sciences 35 (2):61-79.
    Throughout the world people differ in the magnitude with which they value strong family ties or heightened religiosity. We propose that this cross-cultural variation is a result of a contingent psychological adaptation that facilitates in-group assortative sociality in the face of high levels of parasite-stress while devaluing in-group assortative sociality in areas with low levels of parasite-stress. This is because in-group assortative sociality is more important for the avoidance of infection from novel parasites and for the management of infection in (...)
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  2.  70
    Personality, Parasites, Political Attitudes, and Cooperation: A Model of How Infection Prevalence Influences Openness and Social Group Formation.Gordon D. A. Brown, Corey L. Fincher & Lukasz Walasek - 2016 - Topics in Cognitive Science 8 (1):98-117.
    What is the origin of individual differences in ideology and personality? According to the parasite stress hypothesis, the structure of a society and the values of individuals within it are both influenced by the prevalence of infectious disease within the society's geographical region. High levels of infection threat are associated with more ethnocentric and collectivist social structures and greater adherence to social norms, as well as with socially conservative political ideology and less open but more conscientious personalities. Here we use (...)
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    The parasite-stress theory may be a general theory of culture and sociality.Corey L. Fincher & Randy Thornhill - 2012 - Behavioral and Brain Sciences 35 (2):99-119.
    In the target article, we presented the hypothesis that parasite-stress variation was a causal factor in the variation of in-group assortative sociality, cross-nationally and across the United States, which we indexed with variables that measured different aspects of the strength of family ties and religiosity. We presented evidence supportive of our hypothesis in the form of analyses that controlled for variation in freedom, wealth resources, and wealth inequality across nations and the states of the USA. Here, we respond to criticisms (...)
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    Editorial: Coronavirus Disease (COVID-19) and Its Psychobehavioral Consequences.Severi Luoto, Marjorie L. Prokosch, Marco Antonio Correa Varella, Indrikis Krams & Corey L. Fincher - 2021 - Frontiers in Psychology 12.
  5.  66
    Immigration, parasitic infection, and United States religiosity.Jaimie N. Wall, Todd K. Shackelford, Corey L. Fincher & Randy Thornhill - 2012 - Behavioral and Brain Sciences 35 (2):97.
    Fincher & Thornhill (F&T) present a powerful case for the relationship between parasite-stress and religiosity. We argue, however, that the United States may be more religious than can be accounted for by parasite-stress. This greater religiosity might be attributable to greater sensitivity to immigration, which may hyperactivate evolved mechanisms that motivate avoidance of potential carriers of novel parasites.
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