On the most recent bloggingheads.tv you can watch Paul Bloom explaining why he thinks the propensity for theism is an innate bias of our species. Several years back Bloom wrote a piece for The Atlantic, Is God an Accident?, where he makes a similar case. But the general outline of Bloom’s line of thinking is actually most powerfully argued in Scott Atran’s In God’s We Trust. The cognitive psychologists and anthropologists who work within this paradigm are operate under some background assumptions in regards to our mental architecture. First, human cognitive states are strongly biased by innate tendencies which have a biological origin. Perception and language acquisition are easily explained by nativist treatments, but Atran and others have argued that more obscure biases such as folk biology also exist, while other domains such as theory of mind are broadly accepted within the scholarly community.