I am Professor Emeritus in the Department of Psychology, Neuroscience & Behaviour at McMaster University in Hamilton, Ontario, Canada.

My areas of interest are human violence (especially homicide), family relations, and evolutionary psychology.  My latest book (July, 2016) is entitled Killing the competition: economic inequality and homicide. 

I am a founding member and past-president (1991-1993) of the Human Behavior & Evolution Society (HBES), and with my late wife Margo Wilson, I served as co-editor-in-chief of the society's journal Evolution & Human Behaviour for its first decade. 

Margo and I also co-authored three books: Sex, Evolution and Behavior (1978, 1983), Homicide (1988), and The Truth about Cinderella (1998).  In 1998, we were elected Fellows of the Royal Society of Canada.