Evolutionary psychology of religion – Wikipedia, the free …

Posted: January 2, 2015 at 7:49 am


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The evolutionary psychology of religion is the study of religious belief using evolutionary psychology principles. It is one approach to the psychology of religion. As with all other organs and organ functions, the brain and cognition's functional structure have been argued to have a genetic basis, and are therefore subject to the effects of natural selection and evolution. Like other organs and tissues, this functional structure should be universally shared amongst humans and should solve important problems of survival and reproduction. Evolutionary psychologists seek to understand cognitive processes, religion in this case, by understanding the survival and reproductive functions they might serve.

There is general agreement among scientists that a propensity to engage in religious behavior evolved early in human history. However, there is disagreement on the exact mechanisms that drove the evolution of the religious mind. There are two schools of thought. One is that religion itself evolved due to natural selection and is an adaptation, in which case religion conferred some sort of evolutionary advantage. Alternatively, religious beliefs and behaviors may have emerged as by-products of other adaptive traits without initially being selected for because of their own benefits.

Religious behavior often involves significant costs including economic costs, celibacy, dangerous rituals, or by spending time that could be used otherwise. This would suggest that natural selection should act against religious behavior unless it or something else causing religious behavior to have significant advantages.[1]

Richard Sosis and Candace Alcorta have reviewed several of the prominent theories for the adaptive value of religion.[2] Many are "social solidarity theories", which view religion as having evolved to enhance cooperation and cohesion within groups. Group membership in turn provides benefits which can enhance an individual's chances for survival and reproduction.

These social solidarity theories may help to explain the painful or dangerous nature of many religious rituals. Costly-signaling theory suggests that such rituals might serve as public and hard to fake signals that an individual's commitment to the group is sincere. Since there would be a considerable benefit in trying to cheat the system - taking advantage of group living benefits without taking on any possible costs - the ritual would not be something simple that can be taken lightly.[2] Warfare is a good example of a cost of group living, and Richard Sosis, Howard C. Kress, and James S. Boster carried out a cross-cultural survey which demonstrated that men in societies which engage in war do submit to the costliest rituals.[3]

Studies that show more direct positive associations between religious practice and health and longevity are more controversial. Harold G. Koenig and Harvey J. Cohen summarized and assessed the results of 100 evidence-based studies that systematically examined the relationship between religion and human well-being, finding that 79% showed a positive influence.[4] These studies are popular in the media, as seen in a recent NPR program including University of Miami Professor Gail Ironson's findings that belief in God and a strong sense of spirituality were good predictors of a lower viral load and improved immune cell levels in HIV patients.[5] However, Dr. Richard P. Sloan of Columbia University was quoted in the New York Times as saying that "...there is no really good compelling evidence that there is a relationship between religious involvement and health."[6] There is still debate over the validity of these findings, and they do not necessarily prove a direct cause-and-effect relationship between religion and health. Mark Stibich claims there is a clear correlation but the reason for it is unclear.[7] A criticism of such placebo effects, as well as the advantage of religion giving a sense of meaning, is that it seems likely that less complex mechanisms than religious behavior could achieve such goals.[1]

Stephen Jay Gould cites religion as an example of an exaptation or spandrel, but he does not himself select a definite trait which he thinks was actually acted on by natural selection. He does, however, bring up Freud's suggestion that our large brains, which evolved for other reasons, led to consciousness. The beginning of consciousness forced humans to deal with the concept of personal mortality. Religion may have been one solution to this problem.[8]

Other researchers have proposed specific psychological processes which may have been co-opted for religion. Such mechanisms may include the ability to infer the presence of organisms that might do harm (agent detection), the ability to come up with causal narratives for natural events (etiology), and the ability to recognize that other people have minds of their own with their own beliefs, desires and intentions (theory of mind). These three adaptations (among others) allow human beings to imagine purposeful agents behind many observations that could not readily be explained otherwise, e.g. thunder, lightning, movement of planets, complexity of life, etc.[9]

Pascal Boyer suggests, in his book Religion Explained, that there is no simple explanation for religious consciousness. He builds on the ideas of cognitive anthropologists Dan Sperber and Scott Atran, who argued that religious cognition represents a by-product of various evolutionary adaptations, including folk psychology. He argues that one such factor is that it has, in most cases, been advantageous for humans to remember "minimally counter-intuitive" concepts which are somewhat different from the daily routine and somewhat violate innate expectations about how the world is constructed. A god that is in many aspects like humans but much more powerful is such a concept while the often much more abstract god discussed at length by theologians is often too counter-intuitive. Experiments support that religious people think about their god in anthropomorphic terms even if this contradicts the more complex theological doctrines of their religion.[1]

Pierre Lienard and Pascal Boyer suggest that humans have evolved a "hazard-precaution system" which allows us to detect potential threats in the environment and attempt to respond appropriately.[10] Several features of ritual behaviors, often a major feature of religion, are held to trigger this system. These include the occasion for the ritual, often the prevention or elimination of danger or evil, the harm believed to result from nonperformance of the ritual, and the detailed proscriptions for proper performance of the ritual. Lienard and Boyer discuss the possibility that a sensitive hazard-precaution system itself may have provided fitness benefits, and that religion then "associates individual, unmanageable anxieties with coordinated action with others and thereby makes them more tolerable or meaningful".

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