Is there a link between fundamentalism and impairment?

Salon introduces its Question of the Day, where we invite you to lead the conversation.

This week in Salon, Bobby Azarian reports on new findings from the journal Neuropsychologia that suggest "impaired functioning in the prefrontal cortex—whether from brain trauma, a psychological disorder, a drug or alcohol addiction, or simply a particular genetic profile—can make an individual susceptible to religious fundamentalism." Does your experience back up the theory? Is religious fundamentalism a sign of a possibly impaired brain?