1. Department of Psychology, University of Calgary, Calgary, Canada;
2. Department of Sociology, University of Victoria, Victoria, Canada;
3. Institute on Aging and Lifelong Health, University of Victoria, Victoria, Canada;
4. School of Exercise Science, University of Victoria, Victoria, Canada;
5. Department of Psychology, University of Victoria, Victoria, Canada;
6. School of Nursing, University of Victoria, Victoria, Canada;
7. School of Social and Behavioral Health Sciences, Oregon State University, Corvallis, OR, USA