A specialist in gender, childhood, and juvenile justice, she is the author of Caught: Montreal’s Modern Girls and the Law, 1869-1945 and several volumes on women’s history and the history of children and youth. She is currently completing Youth Squad: A History of Policing Children in Mid 20th Century North America. She also works on transnational youth activism and the production of globalmindedness in schools in the 1960s and 70s.