1. Christopher B. McLeod, Ying C. MacNab, and Clyde Hertzman are with the School of Population and Public Health at the University of British Columbia, Vancouver. Christopher B. McLeod and Clyde Hertzman are also with the Human Early Learning Partnership at the University of British Columbia and with the Successful Societies Program at the Canadian Institute for Advanced Research, Toronto, ON. Ying C. MacNab is also with the Child and Family Research Institute, Vancouver, BC. John N. Lavis is with the...