While much of the furor over the conflict between science and faith centers on the question of origins and evolution – it is not limited to these questions alone. The sciences also impact our understanding of human behavior and human response and this can also lead to increased understanding or to conflict.
The September 2009 issue of Discover Magazine has an interesting article on the Seven Deadly Sins (the magazine has a website at discovermagazine.com – but this article is not available on-line, at least not yet). The article poses a question “Why does being bad feel so good?” and describes research being done these days to explore the science of sin. One of the most interesting techniques used in these studies is functional magnetic resonance imaging (fMRI), another is PET (positron-emission tomography). In these technique the active areas of the brain are mapped as the subject responds to certain stimuli.
Consider one sin – Gluttony. In one experiment the researcher asks his volunteers to come in hungry.
He then torments them, asking them to describe their favorite food in loving detail while he heats it up in a near by microwave so that the aroma wafts through the room. … the motivational regions in their brains go wild. Parts of the front orbital cortex, which is implicated in decision making, also light up. (p. 50)
These and other studies indicate that obese people have lower reward sensitivity and that areas involved in inhibitory control are less active. In fact it appears that overeating downregulates inhibition control. Tongue in cheek (I think) the article suggests that this offers moral absolution. If a sin isn’t voluntary it isn’t a sin – at least according to Thomas Aquinas – and we are wired to overeat.
This is a relatively minor example – but it leads to an interesting question.
What role does chemistry or biology play in our understanding of sin?