Institute of Clinical and Professional Training and Research

(800) 338-3738

Devereux National

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Our Internship Faculty

Devereux’s Professional Psychology Internship Training Program has a highly qualified and experienced training faculty, all of whom thoroughly enjoy the training mission.

Stewart M. Shear, Ph.D.

National Director of Intellectual and Developmental Disabilities Services

Phone: (610) 296-6844

139 Leopard Rd.
Berwyn, PA 19312


Dr. Stewart Shear is a licensed psychologist in the Commonwealth of Pennsylvania and serves as Devereux’s national director of Intellectual/Developmental Disabilities (I/DD) Services. In this role, Shear oversees the development and implementation of best practices for individuals with intellectual and/or developmental disabilities.

Prior to his current position, Shear was the director of Clinical Services for Devereux Pennsylvania’s Adult Services center in Berwyn, Pa., where he was responsible for the implementation of clinical services, community-based services and day programs for adults with I/DD, dual diagnosis and brain injury. He also held the role of Devereux Pennsylvania senior clinical director. During his 24-year tenure with the organization, Shear also served as Devereux New Jersey’s administrator for Community Services for individuals with intellectual/developmental disabilities and Devereux Pennsylvania’s clinical director for children with intellectual disabilities. Shear is a supervising psychologist for Devereux’s Doctoral Internship Program and is a member of the American Psychological Association, the Pennsylvania Psychological Association and the National Association of School Psychologists. He also serves on the IRB Research Review Committee, is a member of Devereux’s National Ethics Committee, and is an advisory board member for the Pennsylvania Communities Faith Leadership Project.

Throughout his career, Shear’s passion can be found in applied research related to self-management, as well as the practice of faith and quality of life issues for adults with disabilities. His research has resulted in various publications and presentations at local and national conferences. Shear earned his master’s degree in Psychology with a clinical concentration from Marywood University and a bachelor’s degree in Psychology from the State University of New York (SUNY) - Binghamton. In addition, he earned his doctorate with a specialty in School Psychology from Lehigh University.

Credentials and Certificates

  • Licensed Psychologist in Pennsylvania

Academic and Clinical Areas of Expertise

  • Intellectual and Developmental Disabilities
  • Dual Diagnosis
  • Self-Management
  • Positive Behavior Interventions and Supports - I/DD

Professional Experience

  • 2017-present: Devereux Foundation - National Director of I/DD Services
  • 2001-present: Devereux Adult Services - Director of Clinical Services
  • 1998-2001: Devereux New Jersey - State Program Administrator for I/DD Services
  • 1993-1998: Devereux CIDD Center - Director of Clinical Services 


  • Lehigh University - Ph.D. in School Psychology 
  • Marywood University – M.A. in Psychology with clinical concentration
  • State University of New York (SUNY), Binghamton – B.A. in Psychology  

Publications and Presentations

  • Freeman R., Lollar R, Shear Rodgers T & Reid D. (2018). Issues related to the Home and Community-Based Waiver and Positive Behavior Support. Panel presentation at the 15th International Conference on Positive Behavior Support, San Diego CA.
  • Shear S., Sarin S. & Stricker L. (2017). Introduction to Devereux Positive Behavior Interventions and Supports for individuals with I/DD. Paper presentation at the 14th International Conference on Positive Behavior Support, Denver, CO.
  • Horovitz, M., Shear, S.M., & Pellerito, V.M. (2014). The relationship between Axis I psychopathology and quality of life in adults with mild to moderate intellectual disability. Research in developmental disabilities. 35, 137-143.
  • Dugan, M., Handler, R., Reidel, K., & Shear, S. (2014) Residential treatment for children, adolescents and adults dually diagnosed with mental health disorders. American Association of Child and Adolescent Psychiatry. San Diego, CA
  • Dugan, M., Handler, R., Reidel, K., Shear, S. (2013) Residential treatment for children, adolescents and adults dually diagnosed with Mental Health Disorders. American Association of Child and Adolescent Psychiatry. Sarasota, FL.   

Awards, Honors and Organizations

  • Advisory Board member, Pennsylvania Communities Faith Leadership Project.    
  • American Psychological Association
  • Pennsylvania Psychology Association
  • National Association of School Psychologists