Tom Rees reports on an analysis of the GSS which point to the correlation between low verbal skills and a Biblical literalist outlook. Well, I've talked about this at length. Religion & IQ, Biblical literalism or low IQ: which came first?, Pentecostals are stupid? Unitarians are smart? and Educational levels & denomination. Poking around the GSS the powerful correlates of belief in the literal truth of the Bible (variable "BIBLE") jump out at you.