Stephen Leff, Ph.D.

Children's Seashore House of The Children's Hospital of Philadelphia
University of Pennsylvania School of Medicine
3550 Market Street
Third Floor; Room 3033B
Philadelphia, PA 19104-4388
Phone: 215-590-7067
Email: [email protected]
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Last Updated: July 23, 2012


Leadership Administrative Staff: Research Training Director
Primary Activity Coordinators: Research
Research Director
Project/Program/Clinic Contacts: The Philadelphia Collaborative Violence Prevention Center
Discipline(s): Psychology
AUCD Council Membership: Council on Research and Evaluation
No Council Membership




Stephen S. Leff, Ph.D.


Assistant Professor of Clinical Psychology in Pediatrics

EDUCATION/TRAINING  (Begin with baccalaureate or other initial professional education, such as nursing, and include postdoctoral training.)



(if applicable)



Duke University, Durham, NC



Psychology & Religion

University of North Carolina, Chapel Hill, NC



Clinical Psychology

University of North Carolina, Chapel Hill, NC



Clinical Psychology

A.  Positions and Honors

2005-present                Ad Hoc Reviewer for Child Development, Journal of Consulting & Clinical Psychology

2004-present                NIH Grant Review Committee Member (Minority/Disability Pred. Fellow, DPPS, Study Section)

2004-present                Associate Director, Community Schools Program, CHOP, Philadelphia, PA

2003-present                Institutional Review Board Member at The Children's Hospital of Philadelphia

2003-present                Ad Hoc Reviewer for Journal of Abnormal Child Psychology, Journal of Family Psychology, Journal of School Psychology

2002-present                Editorial Advisory Board, School Psychology Review

2001-present                Assistant Professor of Clinical Psychology in Pediatrics, Department of Pediatrics, University of Pennsylvania, Philadelphia, PA

1999-present                Ad Hoc reviewer: School Psych. Review, Merrill-Palmer Quarterly, and Journal of Ped. Psych.

1999-present                Director of the Friend to Friend Program, CHOP, Philadelphia, PA

1998-present                Clinical Associate, Department of Pediatrics, CHOP, Philadelphia, PA

1998-present                Staff Psychologist, Community Schools Program/ADHD Program, CHOP, Philadelphia, PA

1998-present                Director, Playground, Lunchroom, and Youth Success (PLAYS), CHOP, Philadelphia, PA


1998                Playground, Lunchroom, and Youth Success (PLAYS) Program cited as example of Best Practice in Philadelphia for school-based interventions

B.  Selected peer-reviewed publications (in chronological order)

Power, T. J., Manz, P. H., & Leff, S. S. (2003). Training for effective practice in the schools.  In M. Weist, S. Evans, & N. Tashman (Eds.), School mental health handbook (pp. 257-273).  Norwell, MA: Kluwer Academic/Plenum Publishers.

Leff, S. S. (2004).  Gaining a better understanding of peer group contributions to dating aggression.  Implications for prevention and intervention programming: Comment on Kinsfogel and Grych (2004) Journal of Family Psychology, 18, 516-518.

Leff, S. S., Angelucci, J., Goldstein, A. B., Cardaciotto, L., Paskewich, M.S., & Grossman, M.B. (in press). Using a participatory action research model to create a school-based intervention program for relationally aggressive girls: The Friend to Friend Program.  In J. Zins, M. Elias, & C. Maher (Eds.), Handbook of Prevention and Intervention in Peer Harassment, Victimization, and Bullying.  New York. Haworth.

Leff, S. S., Crick, N., Angelucci, J, Haye, K., Jawad, A., Grossman, M., & Power, T.  (in press). Understanding social cognitive development in context: Partnering with urban African American girls to create a hostile attribution bias measure. Child Development.

C.  Research Support

K23 MH01728-O1A1                     Leff (PI)                                                                                                                                                                                                                                                  9/00-2/06       


Designing Interventions for Inner-City Aggressive Females

The major goal of this early career award is to examine the playground behavior, social cognitions, and comorbid conditions of subgroups of aggressive girls, and to establish an effect size estimate for the 20-session school-based group intervention to improve these high-risk girls' friendship making skills and anger management abilities.