PhD in Social and Political Science, Cambridge UK, 1983
Signalling Theory and Applications, Trust and Distrust, Mafias, Violent Extremists
Supervision of doctoral students
- Engineers of Jihad. The curious connection between education and violent extremism. Princeton University Press (with Steffen Hertog), 2016.
- “Amoral Familism, Social Capital, or Trust? The Behavioural Foundations of the Italian North-South Divide”, The Economic Journal (with M. Bigoni, S. Bortolotti, M. Casari, and F.Pancotto), 2015.
- Codes of the underworld. How criminals communicate. Princeton: Princeton University Press, 2009.