Stephen Lassen, PhD

Education & Training:

• B.S. (Psychology), Bringham Young University
• M.A. (Child Clinical Psychology), University of Kansas, Lawrence, Kansas
• Pre-doctoral Fellowship - Children's Hospital Boston/Harvard Medical School, Boston, MA
• Ph.D. (Child Clinical Psychology), University of Kansas, Lawrence, Kansas
• Post-doctoral Fellowship: Children's Hospital and Regional Medical Center, Seattle, WA

Professional Affiliations:

• American Psychological Association
• APA Division 53 (Clinical Child and Adolescent Psychology)
• APA Division 54 (Society for Pediatric Psychology)

Publications:

• Lassen, S. R., Steele, M. M., & Sailor, W. (2006). The relationship of school-wide positive behavior support to academic achievement in an urban middle school. Psychology in the Schools, 43, 701-712.
• Lassen, S. R. (2006). Juvenile delinquency. In N. J. Salkind & K. DeRuyck (Eds.), The Encyclopedia of Human Development (pp. 754-756). Thousand Oaks, CA: Sage.
• Lassen, S. R. (2006). Naturalistic observation. In N. J. Salkind & K. DeRuyck (Eds.), The Encyclopedia of Human Development (pp. 892-893). Thousand Oaks, CA: Sage.
• Warren, J. S., Edmonson, H. M., Griggs, P., Lassen, S. R., McCart, A., Turnbull, A. & Sailor, W. (2003). Urban applications of school-wide positive behavior support: Critical issues and lessons learned. Journal of Positive Behavior Interventions, 5, 80-91.
• Smith, J. M., & Lassen, S. (2003).  Delinquent behavior.  In T. H. Ollendick & C. S. Schroeder (Eds.), Encyclopedia of clinical child and pediatric psychology (pp. 158-160). New York: Kluwer/Plenum.
• Smith, J. M., & Lassen, S. (2003). Stealing. In T. H. Ollendick & C. S. Schroeder (Eds.), Encyclopedia of clinical child and pediatric psychology (pp. 640-642). New York: Kluwer/Plenum.
• Turnbull, A., Edmonson, H., Griggs, P., Wickham, D., Sailor, W., Freeman, R., Guess, D., Lassen, S., McCart, A., Park, J., Riffel, L., Turnbull, H. R., & Warren, J. (2002).  A blueprint for schoolwide positive behavior support:  Implementation of three components. Exceptional Children, 68, 377-402.

Presentations:

• Lassen, S., Steele, M., & Rios, J. (2005, March). The impact of schoolwide PBS on academic achievement indicators in an inner-city middle school. Poster presented at the Second International Conference on Positive Behavior Support, Tampa, FL.
• Lassen, S. & Steele, M. (2004, September). Reinforcing staff and students. Workshop presented at the Fall Forum on Positive Behavior Support, Overland Park, KS.
• Wolf, N. & Lassen, S. (2004, September). Implementing effective behavior supports. Workshop presented at the Fall Forum on Positive Behavior Support, Overland Park, KS.
• Lassen, S., Sailor, W., & Steele, M. (2004, April). Positive behavior support in urban middle schools. Paper presented at the Kansas Association for Behavior Analysis Conference, Lawrence, KS.
• Griggs, P. & Lassen, S. (2004, March). Long-term PBS planning and sustainability. Workshop presented at the Spring Forum on Positive Behavior Support, Lawrence, KS.
• Wolf, N. & Lassen, S. (2004, March). Principles of reinforcement. Workshop presented at the Spring Forum on Positive Behavior Support, Lawrence, KS.
• Lassen, S. (2004, February). Observation and assessment of children. Workshop presented at the annual conference of the Douglas County Child Development Association, Lawrence, KS.
• Lassen, S. (2003, August).  Observational techniques for assessing young children.  Workshop presented to staff of First Presbyterian Preschool, Lawrence, KS.
• Lassen, S., & Steele, M. (2002, December).  Positive behavior support: Targeting challenging groups in Kansas City, Kansas. Presentation to Kansas City, Kansas (USD 500) School Psychologists.
• Lassen, S., Vernberg, E., & Smith, J. (2002, October).  Parenting stress, life stress, and positive change in the first three months of multisystemic therapy.  Poster presented at the Kansas Conference in Clinical Child and Adolescent Psychology, Lawrence, Kansas.
• Lassen, S. R. (2001, September).  Positive behavior support: Principles and applications. Workshop presented for staff and administration at Argentine Middle School (USD 500), Kansas City, KS.
• Lassen, S. R., & Smith, J. (2001, August).  Reducing stress in parents of juvenile offenders in multisystemic therapy.  Poster presented at the annual convention of the American Psychological Association, San Francisco, CA.
• Lassen, S. R. (2001, August). Positive behavioral interventions for individual students and at-risk groups. Paper presented at the annual convention of the American Psychological Association, San Francisco, CA.
• Steele, R., Johnston, C., & Lassen, S. R. (2001, August).  Discipline strategies and behavior management in the after-school setting.  Workshop presented for the 21st Century Community Learning Centers of Lawrence Public Schools (USD 497) and Lawrence Boys and Girls Club, Lawrence, KS.
• Lassen, S., & Wells, M. G. (1998, October).  Sensitivity to change in the Youth Outcome Questionnaire Self-Report Version.  Poster presented at The Kansas Conference in Clinical Child Psychology, Lawrence, KS.