When Muslims and non-Muslims belonging to the same society are faced with the same economic and social conditions, Muslim are sometimes (e.g. as in the following case) infinitely more likely to turn to terrorism than their non-Muslim counterparts.

Most people think that terrorism comes from poverty, broken families, ignorance, immaturity, lack of family or occupational responsibilities, weak minds susceptible to brainwashing - the sociopath, the criminals, the religious fanatic, or, in this country, some believe they’re just plain evil.

Taking these perceived root causes in turn, three quarters of my sample came from the upper or middle class. The vast majority—90 percent—came from caring, intact families. Sixty-three percent had gone to college, as compared with the 5-6 percent that’s usual for the third world. These are the best and brightest of their societies in many ways.

Al Qaeda’s members are not the Palestinian fourteen-year- olds we see on the news, but join the jihad at the average age of 26. Three-quarters were professionals or semi- professionals. They are engineers, architects, and civil engineers, mostly scientists. Very few humanities are represented, and quite surprisingly very few had any background in religion. The natural sciences predominate. Bin Laden himself is a civil engineer, Zawahiri is a physician, Mohammed Atta was, of course, an architect; and a few members are military, such as Mohammed Ibrahim Makawi, who is supposedly the head of the military committee.

As a psychiatrist, originally I was looking for any characteristic common to these men. But only four of the 400 men had any hint of a disorder. This is below the worldwide base rate for thought disorders. So they are as healthy as the general population. I didn’t find many personality disorders, which makes sense in that people who are antisocial usually don’t cooperate well enough with others to join groups. This is a well-organized type of terrorism these men are not like Unabomber Ted Kaczynski, loners off planning in the woods. Loners are weeded out early on. Of the nineteen 9-11 terrorists, none had a criminal record. You could almost say that those least likely to cause harm individually are most likely to do so collectively.

At the time they joined jihad, the terrorists were not very religious. They only became religious once they joined the jihad. Seventy percent of my sample joined the jihad while they were living in another country from where they grew up.[2]