Tracy E Waasdorp, PhD
Assistant Professor of Psychiatry
Senior Research Scientist , Children's Hospital of Philadelphia
Director of Research for School-Based Bullying and Social Emotional Learning in the Center for Violence Prevention , Children's Hospital of Philadelphia
Department: Psychiatry
Contact information
The Roberts Center for Pediatric Research
2716 South Street
Philadelphia, PA 19146
2716 South Street
Philadelphia, PA 19146
Office: 2674251312
Education:
BA (Psychology)
Muhlenberg College, 2002.
MS (Counseling and Psychological Services)
University of Pennsylvania, 2003.
PhD (Human Development and Family Studies)
University of Delaware, 2008.
Permanent linkBA (Psychology)
Muhlenberg College, 2002.
MS (Counseling and Psychological Services)
University of Pennsylvania, 2003.
PhD (Human Development and Family Studies)
University of Delaware, 2008.
Selected Publications
Polanco, C., Carey, R., Barnes, T. Earnshaw, V., Bell, N., & Waasdorp, T.: Capturing Mattering in the Elementary School Classroom: A Rasch Modeling Study of the Mattering to Teachers Scale. Paper presentation at the 2026 AERA Annual Meeting. Los Angeles, CA. 2026.Waasdorpt, T.E.: Blurring Lines: Exploring Cyberbullying and Traditional Bullying in the Digital Era. Research in Action Blog October 2025 Notes: https://injury.research.chop.edu/blog/posts/blurring-lines-exploring-cyberbullying-and-traditional-bullying-digital-era.
Knab, K.: Virtual Reality Intervention Aims to Improve Social Relationships, Reduce Bullying. CHOP Cornerstone Blog on Tracy Waasdorp May 2025 Notes: https://www.research.chop.edu/cornerstone-blog/virtual-reality-intervention-aims-to-improve-social-relationships-reduce-bullying.
Doty, J., Ma, X., & Waasdorp, T. : Beyond screens: Media parenting, adolescent technology interaction, and communication challenges. Presentation given at the Society for Research in Child Development (SRCD) Biennial Meeting, Minneapolis, Minnesota. (eds.). May 2025.
Barlett, C. P., Gentile, D. A., Khoo, A., Kowalski, R., & Waasdorp, T. E.: The predictors and consequences of cyberbullying perpetration and cyber-victimization: The development of a new cyberbullying theory. Journal of Adolescence 2025.
Ma, X., Doty, J. L., Barlett, C. P., & Waasdorp, T. E. : Parental media restriction associated with reduced cyberbullying: A longitudinal study in the context of the pandemic. The Journal of Early Adolescence 2025 Notes: DOI: 10.1177/02724316251343106.
Stevens, L.T., Coleman, J. N., Waasdorp, T. E., Mehari, K.: Longitudinal Relations Between Cyber Dating Aggression and Cyberbullying in Adolescence. International Journal of Bullying Prevention 2025 Notes: DOI: 10.1007/s42380-024-00264-3.
Waasdorp, T.E.: Relational aggression, bullying through social and emotional manipulation. Interview with Australian Psychologist Dr. Jessica Revill on Relational Aggression and Suicide. December 2024 Notes: https://www.youtube.com/watch?v=Wsx0GXP25DY
Doty, J. L., Barlett, C. P., Gabrielli, J., Su, Y., Yourell, J., Waasdorp, T. E. : A theory-derived model of proximal processes of cyberbullying. Journal of Social and Personal Relationships. 41(7): 1980-2005, February 2024 Notes: Online first. https://doi.org/10.1177/02654075241227394.
Fu, R., Paskewich, B., Randolph, J. A., Bradshaw, C. P., & Waasdorp, T. E.: Parent perceptions of school relationships: Considerations of racial–ethnic differences and youth’s peer victimization. Journal of Family Psychology 39(2), 2024 Notes: https://doi.org/10.1037/fam0001243.