Professor Mattes is Senior Adviser to, and co-founder of Afrobarometer, a ground-breaking regular survey of public opinion in 37 African countries.
He is also the co-author (with Michael Bratton and E. Gyimah-Boadi) of Public Opinion, Democracy and Markets In Africa (Cambridge University Press, 2005), and the co-editor (with David Denemark and Richard Niemi) of Growing Up Democratic: Does It Make A Difference? (Lynne Rienner Publishers, 2016).