Religion evolved as a byproduct of pre-existing mental capacities, and not because it fulfilled a specific function of its own -- though it can facilitate co-operation in society, a study concludes. The new study, published Feb. 8 in the research journal Trends in Cognitive Sciences, takes a somewhat different track, exploring the link between morality and religion.
Some scholars claim that religion evolved as an adaptation to solve the problem of co-operation among genetically unrelated individuals, while others propose that religion emerged as a byproduct of pre-existing cognitive capacities," said study co-author Ilkka Pyysiainen of the Helsinki Collegium for Advanced Studies in Finland.
Pyysiainen and a co-author, evolutionary psychologist Marc Hauser of Harvard University, reviewed the two competing theories using the principles of what they call experimental moral psychology. "Religion is linked to morality in different ways," said Hauser. "For some, there is no morality without religion, while others see religion as merely one way of expressing one's moral intuitions."
But past studies, the authors said, show that people of differing religion or no religion show similar moral judgments when asked to comment on unfamiliar moral dilemmas. That suggests intuitive judgments of right and wrong work independently of explicit religious commitments, the researchers argued. "This supports the theory that religion did not originally emerge as a biological adaptation for co-operation, but evolved as a separate byproduct of pre-existing cognitive functions that evolved from non-religious functions," said Pyysiainen.
"However, although it appears as if co-operation is made possible by mental mechanisms that are not specific to religion, religion can play a role in facilitating and stabilizing cooperation between groups." This might help to explain the complex association between morality and religion, the scientists added. "It seems that in many cultures religious concepts and beliefs have become the standard way of conceptual moral intuitions. Although, as we discuss in our paper, this link is not a necessary one, many people have become so accustomed to using it, that criticism targeted at religion is experienced as a fundamental threat to our moral existence," said Hauser.
SOURCE (Journal abstract follows)
The origins of religion : evolved adaptation or by-product?
By Ilkka Pyysiainen and Marc Hauser
Considerable debate has surrounded the question of the origins and evolution of religion. One proposal views religion as an adaptation for co-operation, whereas an alternative proposal views religion as a by-product of evolved, non-religious, cognitive functions. We critically evaluate each approach, explore the link between religion and morality in particular, and argue that recent empirical work in moral psychology provides stronger support for the by-product approach. Specifically, despite differences in religious background, individuals show no difference in the pattern of their moral judgments for unfamiliar moral scenarios. These findings suggest that religion evolved from pre-existing cognitive functions, but that it may then have been subject to selection, creating an adaptively designed system for solving the problem of cooperation.
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