Teaching:
Dr. Cullen joined Mount Royal University in 2023. He is an Assistant Professor in the Department of Economics, Justice, and Policy Studies in the Criminal Justice Degree Program. Dr. Cullen’s teaching focus includes: criminological theory, quantitative research methods, mental health and addictions, and young offenders.

Current Research Projects:

• Examining the Risk and Predictive Factors for Substance Use and Mental Health among Adolescent Youth in Out-of-Home Care.
• Examining Cannabis use Patterns and Behaviours during the Covid-19 Pandemic in Canada: A Multi-wave Analysis of the National Cannabis Survey. Funded by Canadian Centre on Substance Use and Addiction (CCSA) & Social Sciences and Humanities Research Council (SSHRC)
• Exploring Homelessness in Small-Mid-Sized and Large Canadian Cities: an analysis of The Canadian Housing Survey. Funded by Social Sciences and Humanities Research Council (SSHRC)

Upcoming Publications:

Cullen, Greggory. (2023). Supporting Older Youth In-Care: The Role of Caregivers. Adoption and Fostering.

Recent Publications:

Cullen, Greggory. (2023). Examining the Risk and Predictive Factors for Substance Use and Mental Health among Indigenous Youth in Out-of-Home Care. Children and Youth Services Review.

Cristiano, Nick, Hathaway, Andrew, Cullen, Greggory, Wrathall, Meghan, and David Walters. (2022). High Time for the Development of Gendered Interventions to Prevent Young People Driving After Cannabis Use: Evidence from Canada’s National Cannabis Survey. Drugs: Education, Prevention, and Policy.

Cullen, Greggory, Yule, Carolyn, Walters, David, and William O’Grady. (2021). Mental Health Outcomes of Youth In-Care: Investigating the Effect of General Strain and Self-Control Theories. Child and Adolescent Journal of Social Work.

Hathaway, Andrew, Cullen, Greggory, and David Walters. (2021). How well is cannabis legalization curtailing the illegal market? A multi-wave analysis of Canada’s National Cannabis Survey. Journal of Canadian Studies.

Cullen, Greggory, Walters, David, Yule, Carolyn, and William O’Grady (2020). Examining the Risk and Predictive Factors for Marijuana and Alcohol Use among Adolescent Youth in Out-of-Home Care, Journal of Child & Adolescent Substance Abuse.