Sam Sommers, social psychology professor and co-author of “This is Your Brain on Sports,”a collection of essays written for sports fans about the intersection of behavioral science and sports. Sommers can discuss the psychology of cheating in sports. (He also can discuss a number of non-doping topics, including the evolution of women and sports; national sports pride; and the psychology of being a sports fan, among others.) Contact: Kalimah Knight, [email protected], 617-627-4703.