1e
19
1
49
2
2
18
1b
1d
18
33
46
1d
2 29
1d
25
Tracy E Waasdorp, PhD
88
46
Assistant Professor of Psychiatry
28
76
3
61
Senior Research Scientist , Children's Hospital of Philadelphia
cf
Director of Research for School-Based Bullying and Social Emotional Learning in the Center for Violence Prevention , Children's Hospital of Philadelphia
11
Department: Psychiatry
4
1
b
1d
46
Contact information
57
4
3
3
3
2
4
b
1f
57
The Roberts Center for Pediatric Research
34 2716 South Street
Philadelphia, PA 19146
26
34 2716 South Street
Philadelphia, PA 19146
2c
Office: 2674251312
30
f
30
13
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.
c
3
3
3
3
8d
Permanent link21 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.
c
2 29
21
1e
1d
24
2b
29
27
23
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.
147 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.
138 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.
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.
147 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
16a 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.
2c
7
1d
1f
Selected Publications
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.
147 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.
138 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.
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.
147 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
16a 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.
2c