Rosemary Condillac

Associate Professor & BACB Liaison

Dr. Condillac is interested in supervising new MA students (in both ABA and LDCC Specializations) in Fall 2026,
pending departmental supervision allocations.

Dr. Rosemary Condillac, Applied Disability Studies, Brock University

Ph.D., C.Psych., RBA (Ont.), BCBA-D

[email protected]

Dr. Rosemary Condillac in an Associate Professor in the Department of Applied Disability Studies and has been a member of the Faculty of Social Sciences since 2006. She is a Registered Psychologist and Registered Behaviour analyst in Ontario and is a Doctoral-level Board Certified Behaviour Analyst. She has been working in the field of disabilities for over 35 years. She earned her Ph.D. in School and Child Clinical Psychology at OISE/UT in 2002, her MA in Applied Developmental Psychology-Clinical at OISE/UT, in 1997 and her undergraduate degree in Psychology from York University in 1988. She is a past-president of the Ontario Association for Behaviour Analysis (ONTABA) and past-chair of the Ontario Association on Developmental Disabilities Research Special Interest Group (OADD-RSIG). Dr. Condillac teaches graduate courses in Applied Behaviour Analysis (ABA) and is has overseen ABA credentialling for the ADS programs since 2006 including liaising with the Behaviour Analyst Certification Board (BACB ®), Association for Behavior Analysis International (ABAI), and more recently the Ontario College of Psychologist and Behaviour Analysts (CPBAO). She is a member of the ABA Ethics Hotline, responding to ethical queries from behaviour analysts globally.

Research Interests

  • Evidence-based and trauma informed practices in the assessment and treatment of challenging behaviour for individuals with disabilities including intellectual disabilities, autism spectrum disorders, fetal alcohol spectrum disorders, and genetic conditions.
  • Service recipient self-determination and agency in ABA services.
  • Behavioural treatment plan adherence by natural caregivers in applied settings, and strategies to increase adherence and improve clinical outcomes (e.g performance feedback, competency-based training, behaviour skills training)
  • Outcomes and processes of De-institutionalization
  • The development of sustainable program evaluation methods for clinical service agencies
  • The use of Applied Behaviour Analysis (ABA) in the education of learners through the lifespan with and without disabilities (e.g. Direct Instruction).
  • The Health Care and Service needs and the met and unmet support needs of children and adults with severe intellectual disabilities.
  • The use of Applied Behaviour Analysis (ABA) to improve wellness in adults with intellectual disabilities and their support staff.
  • ABA Ethics in practice
  • Clinical decision making
  • DEI training and impacts
  • Supervision Skills for novice and seasoned behaviour analysts
  • Wellbeing of community practitioners, behaviour analysts, faculty and students
  • Behaviour Skills Training for families and Caregivers
  • Pyramidal Behaviour Skills Training for Supervisors and direct-support professionals
  • Quality of Be
  • Preventing out of home placement in child protection
  • Strengths, Needs, and Experiences of (disabled) post-secondary students (with disabilities).
  • Intersectional Experiences of post-secondary students from marginalized groups.
  • Triangulation of Youth, Parent, and Teacher experiences of ADHD medication
  • Unconscious bias and ableism in community supports and policies

Publications and collections

Books:

Brown. I., Percy, M., Aldersey, H., Condillac, R.A., Fung, A., & Isaacs, B. (2021). Developmental disabilities in Ontario (4th ed.). Toronto, ON: Ontario Association on Developmental Disabilities.Griffiths, D.,

Condillac, R.A., & Legree, M. (Eds.) (2014). Genetics & Applied Behavior Analysis. London: UK, Jessica Kingsley Publishers.

Griffiths, D., Owen, F. & Condillac, R.A. (Eds.). (2016) A difficult dream: Ending institutionalization for persons with intellectual disabilities. Kingston, NY: NADD Press.

Book Chapters:

Condillac, R.A. (2021). Behavioral Interventions. In I. Brown, & M. Percy, H. Aldersey, R. A. Condillac, A. Fung, & B. Isaacs, (Eds.), Developmental disabilities in Ontario (4th ed.). Toronto, ON: Ontario Association on Developmental Disabilities.

Condillac, R.A. & Thomson, K. (2021). Teaching Adaptive Behaviour. In I. Brown, & M. Percy, (Eds.), Introduction to developmental disabilities in Ontario (4th ed.). Toronto, ON: threesixtycreative.

Condillac, R.A. & Baker, D. (2016). Behavioural intervention and developmental disabilities. In M., Wehmeyer, M., Brown, I, Percy, M, Shogren, K, and Fung, M. A Comprehensive Guide to Intellectual and Developmental Disabilities, Second Edition. Baltimore: Paul H. Brookes Publishing Inc.

Condillac R.A., *White, K., & *Ireland, L. (2016) Community participation after the Facilities Initiative in Ontario. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Condillac, R.A., & Owen F. (June 17, 2016) The Facilities Initiative evaluation studies research. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.Griffiths, D.,

Condillac, R.A., & Owen F. (2016) Key factors involved in successful deinstitutionalization: Lessons learned from the Facility Initiative Studies. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., & Condillac, R.A. (2016) Family reaction to the Facilities Initiative: A family survey. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., & Condillac, R.A. (2016) Outcomes from the Facilities Initiative: The agency survey. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., & Condillac, R.A. (2016) The deinstitutionalization process for families: Findings from the Facilities Initiatives Studies. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., & Condillac, R.A. (2016) The deinstitutionalization process for agencies: Findings from the Facilities Initiatives Studies. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., *Hamelin, J., Feldman, M., Condillac, R.A., & Frijters, J. (2016) History of institutionalization: General background. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., *Hamelin, J., Feldman, M., Condillac, R.A., & Frijters, J. (2016) The shift from institutions to the community: the Ontario experience. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., *Hamelin, J., Feldman, M., Condillac, R.A., & Frijters, J. (2016) Impact of deinstitutionalization on the lives of persons with intellectual disabilities. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., *Hamelin, J., Feldman, M., Condillac, R.A., & Frijters, J. (2016) Critiques and concerns regarding deinstitutionalizationon the lives of persons with intellectual disabilities. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., *Hamelin, J., Feldman, M., Condillac, R.A., & Frijters, J. (2016)  Emerging changes in the deinstitutionalization process. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Griffiths, D., Owen, F., *Hamelin, J., Feldman, M., Condillac, R.A., & Frijters, J. (2016) The attitudes, experiences and impact on families during and after deinstitutionalization. In D. Griffiths, F. Owen, & R.A. Condillac (Eds), A Difficult dream: Ending institutionalization for persons with intellectual disabilities.
Kingston, NY: NADD Press.

Condillac, R.A. & *Legree, M. (2014). Understanding Applied Behaviour Analysis. In D. Griffiths, R. Condillac, & Legree, M. (Eds.), Genetics and Applied Behaviour Analysis. London, UK: Jessica Kingsley Publishers.

*White, K., *Billingsley, T., & Condillac, R.A. (2014). Down Syndrome: Implications for ABA. In D. Griffiths, R. Condillac, & Legree, M. (Eds.), Genetics and Applied Behaviour Analysis. London, UK: Jessica Kingsley Publishers.

Condillac, R.A. (2011). Problem behaviour and developmental disabilities. In I. Brown, & M. Percy, (Eds.), Introduction to developmental disabilities in Ontario (3rd ed.). Toronto, ON: Ontario Association on Developmental Disabilities.

Condillac, R.A. (2007). Behavioural intervention and developmental disabilities. In I. Brown, & M. Percy, (Eds.), Intellectual and developmental disabilities. Baltimore: Paul H. Brookes Publishing Inc.

Condillac, R.A. (2003). Problem behaviour and developmental disabilities. In I. Brown, & M. Percy, (Eds.), Introduction to developmental disabilities in Ontario (2nd ed.). Toronto, ON: Ontario Association on Developmental Disabilities.

Condillac, R.A. (1999). Problem behaviour and developmental disabilities. In I. Brown, & M. Percy, (Eds.), Introduction to developmental disabilities in Ontario. Toronto, ON: Ontario Association on Developmental Disabilities.

Articles:

Nadesan, P., Munir, M., Christy Antony, A., Banfield, L., Bhopa, S., Wahi, G., Kwan, M. Y. W., Bellissimo, N., Kandasamy, S., DiLiberto, D. D., Condillac, R. A., Beyene, J., Sherifali, D., Yi, K. J., Crea-Arsenio, M., Lee, Y., & de Souza, R. J. (2025). Exploring the Barriers to and Facilitators of Inclusive Physical Education for Canadian Elementary and Middle School Students: A Scoping Review. Journal of Education (Published online Sept 2025) https://doi.org/10.1177/00220574251383467

Thomson, K., Condillac, R.A, Trudeau-Craig, K., Busch, L., Koudys, J., *Boutsis, E., & Broto, Joan. (2023). The Long and Winding Road to Professional Regulation in Ontario Canada, https://doi.org/10.1007/s40617-023-00880-3

Griffiths, D., Owen, F., & Condillac, R.A. (2016). Brief report on the facilities initiative in Ontario: A survey of community agencies. Journal on Developmental Disabilities, 28-37, 21(2).

Griffiths, D., Owen, F.,  & Condillac, R.A. (2016). Family feedback on the closure of institutions for persons with intellectual disabilities in Ontario. Journal on Developmental Disabilities, 38-48, 21(2).

Owen, F., Griffiths, D., & Condillac, R.A. (2016). The Ontario Facilities Initiative: Perceptions of the Deinstitutionalization Process. Journal on Developmental Disabilities, 49-59, 21(2).

Hamelin, J.P., Frijters, J., Griffiths, D., Condillac, R.A., & Owen, F. (2011). Meta-analysis of deinstitutionalization adaptive behaviour outcomes: Research and clinical implications. Journal of Intellectual and Developmental Disabilities Research, 36(1), 61-72.

Condillac, R.A., & Martin, L. (2010). Special Issue on behavioral interventions in autism. Journal on Developmental Disabilities, 16. (Guest Editor).

Perry, A., & Condillac, R.A. (2010). The TRE-ADD preschool parent training program: Program evaluation of an innovative service delivery model. Journal on Developmental Disabilities, 16(2), 8-16.

Wells, K., Condillac, R.A., Perry, A., & Factor, D.C. (2009). A comparison of three adaptive behaviour measures in relation to cognitive level and severity of autism. Journal on Developmental Disabilities, 15(3), 55-63.

Perry, A., Condillac, R.A., Freeman, N.L., Dunn Geier, J., & Belair, J. (2005). Multi-site study of the Childhood Autism Rating Scale (CARS) in five clinical groups of young children. Journal of Autism and Developmental Disorders, 35, 625–634.

Condillac, R.A. (2004). Special issue on families of individuals with DD: Introductory comments. Journal on Developmental Disabilities. (Guest Editor)

Feldman, M.A., Atkinson, L., Foti-Gervais, L., & Condillac, R.A. (2004). Formal versus informal interventions for challenging behaviour in persons with intellectual disabilities. Journal of Intellectual Disability Research, 48(1), 60-68.

Feldman, M.A., Condillac, R.A., Tough, S.E., Hunt, S., & Griffiths, D. (2002). Effectiveness of community positive behavioral intervention for persons with developmental disabilities and severe behavioral challenges. Behavior Therapy, 33, 377-398.

Perry, A., Condillac, R.A., & Freeman, N.L. (2002). Best practices and practical strategies in the assessment/diagnosis of autism. Journal on Developmental Disabilities, 9, 61-75.

Condillac, R.A. (1999). Untangling the web: Finding information about the treatment of autism on the world wide web (Review Article). Journal on Developmental Disabilities, 6, 84-87.

Condillac, R.A. (1997). Untangling the web: Where to find developmental disabilities information on the world wide web (Review Article). Journal on Developmental Disabilities, 5, 71-74.

Advice for applicants

Students interested in applying to work with me urged to contact me by email in the Fall prior to applying (i.e. September 2025, for application deadline in Dec 2025) to discuss your research interests. Also, if eligible, students are urged to apply for Ontario Graduate Scholarships (OGS), SSHRC Masters or Doctoral or other research funding sources that are typically due in the fall prior to entry (e.g. Fall 2025 for Fall 2026 program start). Applications are due prior to most application deadlines.

I supervise students in both Leadership, Diversity, Community, and Culture (LDCC) and Applied Behaviour Analysis (ABA) Specializations. My graduate students have diverse identities and are active members of the Brock Community. If you are applying to Brock and might require specific supports or academic accommodations to promote your success in graduate school, you can find more information about academic accommodations on the Student Accessibility Services Website.

More Information about becoming a graduate student at Brock can be found on the Graduate Studies and Postdoctoral Affairs Website.

Lab volunteers

Current Brock Students or members of the community interested in applying to volunteer in my lab to gain experience should submit a brief letter of introduction and their resumé by email. I will arrange for you to attend a lab meeting and meet with a lab mentor to discuss opportunities. I take volunteers at various times throughout the year, so feel free to contact me if you are looking to enhance your research experience.

Post-doctoral fellows

If you are interested in collaborating on research that could lead to a post-doctoral fellowship please feel free to email me as early as possible to allow for planning and internal review of your application.