University of Michigan professor and terrorism expert Scott Atran has also interviewed captured jihadists and would-be bombers.

NPR: Examining the Makeup of the Iraqi Insurgency

The research team includes Scott Atran, an American university professor.

NPR: Moroccan Village Funnels Suicide Bombers to Iraq

Professor SCOTT ATRAN (Psychology, University of Michigan): Yes.

NPR: Moroccan Village Funnels Suicide Bombers to Iraq