Center for Injury Research and Prevention

Tracy Evian Waasdorp, PhD, MEd

Tracy Waasdorp CIRP
Center for Violence Prevention Scholar

Tracy Evian Waasdorp, PhD, MEd is a Research Scientist at Children’s Hospital of Philadelphia (CHOP). Dr. Waasdorp’s research focuses on the prevention and intervention of bullying and aggression through improving children’s social and emotional skills. Specifically, she contributes to the content, methods, design of measures, and testing the effectiveness of two interventions designed to reduce aggression and bullying among urban elementary aged youth (PRAISE/P4P and Friend-2-Friend) and the Free2B bullying prevention assembly.

Dr. Waasdorp was the lead analyst as a research scientist at Johns Hopkins Bloomberg School of Public Health (JHSPH) examining variations in the effectiveness of Positive Behaviors and Supports (PBIS) and the impact of PBIS on bullying and rejection. At JHSPH, she also collaborated on bullying related content on a comprehensive measure of school climate in high schools (MDS3), which she served as an analyst on a National Institute of Justice (NIJ) grant to extend this measure for use in middle schools, that project also involves the largest randomized trial of school climate intervention to date. Dr. Waasdorp was co-principal investigator on another NIJ grant that designed a program called the Bullying Classroom Check-up (BCCU) that addresses bullying using an innovative, transportable training simulator combined with an evidence-based teacher-coaching model in order to increase teachers’ ability to detect and intervene with bullying behaviors in urban middle school classrooms.   

Dr. Waasdorp has published on school-based bullying prevention and intervention, forms of aggression, bullying and peer victimization (e.g. relational aggression, cyberbullying, and bystander behaviors), coping with bullying victimization, teachers’ perceptions and responses to bullying, parent–child relationships related to peer relationships, and the measurement of school climate. Many of her publications use complex statistical modeling. She has also authored numerous book chapters and recently co-authored a book with Dr. Catherine Bradshaw of Norton Publishing titled Preventing Bullying in Schools: A Social and Emotional Learning Approach to Prevention and Early Intervention (SEL Solutions Series).

Dr. Waasdorp’s research has been supported by the National Institutes of Health, the Centers for Disease Control and Prevention, National Institute of Justice, the Department of Education, National Science Foundation, Pew Charitable Trusts, and the W.T. Grant Foundation. She earned her M.S.Ed in Counseling Psychology from the University of Pennsylvania, her Ph.D. in Human Development & Family Studies from University of Delaware, and completed her post-doc at Johns Hopkins in Prevention Science. Dr. Waasdorp can be contacted at


Partner for Prevention, Free2B