Meet Our Team

Dr. Dawn DeCunha has been a practicing Clinical Psychologist for over 20 years. She has extensive knowledge in the assessment and treatment of complex issues in Trauma through the lifespan. She is also an Educational Psychologist, and has an interest in School related problems (behavioural, learning and social/emotional adjustment). Dr. DeCunha works with Complex Family issues and writes reports for legal purposes (Custody & Access, Parenting Capacity, and Medical-Legal). Her treatment modalities are primarily Cognitive and Behavioural, Mindfulness and Somatically based interventions. She has been qualified as an Expert in Treatment and Intervention in Childhood Trauma, Treatment and Intervention in Child Maladaptive Behaviour, Assessment of Attachment, and Assessment of Childhood Trauma.
At this time, Dr. DeCunha is accepting few patients for treatment, but continues to provide assessment services.

Dr. Olga Henderson is a senior psychologist who limits her practice to Clinical Assessments only. She has more than three decades of experience in the assessment of children, youth and adults. She has extensive experience in Family Court, conducting Sec. 30 and Sec. 54 Court Ordered Assessments.
Psychology Works congratulates Dr. Henderson on her recent retirement from active practice. Dr. Henderson now limits her practice to teaching, training, consultation and mentoring. We look forward to an ongoing professional and fruitful relationship with Dr. Henderson in her new role with us.

Dr. Erick Roat is a clinical psychologist with broad experience treating a wide range of difficulties, including extensive experience in trauma-focused work with military personnel, first responders, and survivors of abuse. He is also experienced in psychological assessment including educational, diagnostic, and Family Court assessments.
Dr. Roat has a strong interest in human growth and flourishing, and in what philosophy and science can teach us about how to live more productively, meaningfully and joyfully; his work blends Cognitive-Behavioural techniques and person-centered approaches to help clients develop new capabilities and enhance existing strengths, to meet their individual challenges.

Jessica Rose, a graduate of the University of Guelph Commerce program, she has seven years’ of experience within business to consumer sales. Jessica will be overseeing marketing, social media, public relations, and business opportunities.



Marley DeCunha is a young working professional Komondor. When he was 13 weeks old he had an incomplete spinal cord injury resulting in his hind legs being paralyzed. After months of therapy, he started to get better; years later he could walk again. Marley’s dream at Psychology Works is to help people remember that when life gets tough, you have to get tougher and to keep moving forward. His job at Psychology works is to ensure that there are no crumbs on the floor, everyone gets greeted, and that the plants get watered.
After 12 years of dedicated, unconditional service only a dog can provide, our gentle giant passed away on June 4, 2022. He embodied happiness, love, strength and endurance, despite his significant physical challenges. He has been a great teacher and we are deeply grateful that he graced us with his unique presence. He was a fierce guardian and is deeply missed by us all. Rest in Peace Beloved Companion.