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Tracy E Waasdorp
46Assistant Professor of Psychiatry
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Senior Research Scientist , Children's Hospital of Philadelphia
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Director of Research for School-Based Bullying and Social Emotional Learning in the Center for Violence Prevention , Children's Hospital of Philadelphia
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Department: Psychiatry
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Contact information
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The Roberts Center for Pediatric Research
34 2716 South Street
Philadelphia, PA 19146
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34 2716 South Street
Philadelphia, PA 19146
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Office: 2674251312
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Education:
21 7 BA 17 (Psychology) c
2b Muhlenberg College, 2002.
21 7 MS 32 (Counseling and Psychological Services) c
33 University of Pennsylvania, 2003.
21 8 PhD 31 (Human Development and Family Studies) c
2f University of Delaware, 2008.
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21 7 BA 17 (Psychology) c
2b Muhlenberg College, 2002.
21 7 MS 32 (Counseling and Psychological Services) c
33 University of Pennsylvania, 2003.
21 8 PhD 31 (Human Development and Family Studies) c
2f University of Delaware, 2008.
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Post-Graduate Training
24 5a Postdoctoral Fellow, Mental Health, Johns Hopkins University, 2008-2010.
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Permanent link24 5a Postdoctoral Fellow, Mental Health, Johns Hopkins University, 2008-2010.
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131 Ma, X., Doty, J. L., Barlett, C. P., & Waasdorp, T. E. : Restrictive Media Parenting Associated With Reduced Cyberbullying in Early Adolescents: A Longitudinal Study. The Journal of Early Adolescence 46(4), 2026 Notes: DOI: 10.1177/02724316251343106 14
134 Waasdorp, T. E.: What to Do if Your Child Engages in Online Gaming Bullying. Psychology Today 2026 Notes: https://www.psychologytoday.com/us/blog/keeping-your-kids-safe/202602/what-to-do-if-your-child-engages-in-online-gaming-bullying.
151 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.
153 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.
160 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.
155 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.
168 Polanco, C., Carey, R. L, Barnes, T., Earnshaw, V., Bell, N., Waasdorp, T.: The Children’s interpersonal mattering at school scale: A psychometric exploration. Presented at the American Education Research Association National Science Foundation Dissertation Fellows Conference. 2025.
16a Waasdorp, T.E.: Blurring Lines: Exploring Cyberbullying and Traditional Bullying in the Digital Era. Children's Hospital of Philadelphia, Research in Action 2025 Notes: https://injury.research.chop.edu/blog/posts/blurring-lines-exploring-cyberbullying-and-traditional-bullying-digital-era.
136 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.
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Selected Publications
15e 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 1(98), 2026 Notes: DOI: 10.1002/jad.70041.131 Ma, X., Doty, J. L., Barlett, C. P., & Waasdorp, T. E. : Restrictive Media Parenting Associated With Reduced Cyberbullying in Early Adolescents: A Longitudinal Study. The Journal of Early Adolescence 46(4), 2026 Notes: DOI: 10.1177/02724316251343106 14
134 Waasdorp, T. E.: What to Do if Your Child Engages in Online Gaming Bullying. Psychology Today 2026 Notes: https://www.psychologytoday.com/us/blog/keeping-your-kids-safe/202602/what-to-do-if-your-child-engages-in-online-gaming-bullying.
151 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.
153 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.
160 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.
155 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.
168 Polanco, C., Carey, R. L, Barnes, T., Earnshaw, V., Bell, N., Waasdorp, T.: The Children’s interpersonal mattering at school scale: A psychometric exploration. Presented at the American Education Research Association National Science Foundation Dissertation Fellows Conference. 2025.
16a Waasdorp, T.E.: Blurring Lines: Exploring Cyberbullying and Traditional Bullying in the Digital Era. Children's Hospital of Philadelphia, Research in Action 2025 Notes: https://injury.research.chop.edu/blog/posts/blurring-lines-exploring-cyberbullying-and-traditional-bullying-digital-era.
136 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.
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