Dr. Jenny Demark, Psychologist
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Dr. Jenny Demark is a Clinical Psychologist experienced in working with children and youth with autism spectrum disorder, developmental/ intellectual disabilities, learning disabilities, attention disorders, and/or disruptive behaviour. Her goal is to improve the quality of life for children and their families by completing thorough assessments and using positive, evidence-based interventions.

Dr. Demark conducts comprehensive psychological assessments to understand the cognitive, adaptive, memory, attention, academic, social, and emotional functioning of children and youth. Her written reports provide parents and educators clear information about children’s strengths and needs, diagnoses (if applicable), community resources, and recommendations to support skill development and growth. She also completes functional behavioural assessments to develop practical treatment plans that can be implemented by families and/or schools.

Dr. Demark’s intervention services include therapy for children and youth to teach them appropriate coping skills for anger, sadness, frustration, and worries. She also works with parents as they manage children’s challenging behaviours. Problem behaviours that she has helped treat range from the relatively mild (e.g., noncompliance, temper tantrums, potty training) to the severe (e.g., aggression, self-injury, sleep disturbances). She uses a behavioural/ cognitive-behavioural treatment approach.

Dr. Demark is a registered psychologist with the College of Psychologists of Ontario.

Conrad Leung, Board Certified Behaviour Analyst
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Conrad Leung is a Board Certified Behaviour Analyst (BCBA) who uses the principles and research of Applied Behaviour Analysis (ABA) to produce meaningful changes in the lives of children and their families.

His focus is on treating children with developmental disabilities who exhibit severe problem behaviours such as self-injury, aggression, or feeding challenges, and teaching them (and their parents) the skills needed to adopt socially acceptable behaviours.

His hands-on approach has been proven to work with children on the autism spectrum, those who have been diagnosed with developmental and learning disabilities, as well as typically developing children. Conrad is providing some services under the clinical supervision of Dr. Jenny Demark, and may therefore be eligible for coverage through third-party insurance.

Conrad has over 15 years experience working in the field of Applied Behaviour Analysis (ABA) in clinical settings including the CHEO Autism Program, school boards, group and residential care, and within the community. He is a member of the Ontario Association for Behaviour Analysis (ONTABA) and the Association of Professional Behaviour Analysts (APBA). Conrad is a graduate of the University of Ottawa (B.A. Psychology), St. Lawrence College (Autism and Behaviour Science), and possesses a Masters in Applied Disability Studies from Brock University. In addition to Conrad's work with Fundamentals, he is an Associate Consultant with FTF Behavioral Consulting.

Dr. Linda Reinstein, Psychologist
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Dr. Linda Reinstein is a Child Clinical and School Psychologist who is registered with the College of Psychologists of Ontario.

In her practice, she provides comprehensive psychological assessment for preschoolers, school-aged children and teens presenting with developmental concerns, learning/academic difficulties, behavioural and attention concerns, social and school adjustment issues and gifted abilities, and in preparation for the transition to University. Goals of assessment are to develop a new framework for understanding and to provide a roadmap of evidence-based and positive strategies, resources, and recommendations, based each child’s unique profile of strengths and needs to help parents and children make meaningful changes in their lives.

As part of the assessment process, Dr. Reinstein also provides follow-up consultation to parents and educators on issues related to parenting, learning strategies, behaviour management strategies, skill development, and using practical and positive solutions to improve the quality of life at home, school and in the community.

Dalya Ridha, Board Certified Behaviour Analyst
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Dalya Ridha is a Behaviour Therapist who uses the principles and research of Applied Behaviour Analysis (ABA) to produce socially significant and meaningful behaviours in the lives of children and their families.

Her focus is on treating children/youth with developmental disabilities and/or individuals presenting with problem behaviour, and teaching them and their families the skills needed to support them in home. She is providing services under the clinical supervision of Board Certified Behaviour Analyst (BCBA), Conrad Leung.

Dalya has over 7 years experience of working in the field of ABA with children and teens, to decrease problem behaviour, and increase socially acceptable behaviours in the areas of daily living, social skills, and communication. Dalya is a graduate of the University of Ottawa (B.Sc), St. Lawrence College (Autism and Behavioural Science), and has a Masters in Professional Education in Applied Behaviour Analysis from Western University. Dalya is also currently working in Behaviour Services- Development & Rehabilitation at CHEO.

Please note that Dalya is unable to provide services to individuals that are currently on the Behaviour Services waitlist with CHEO at this time.

Susan Lawther, B.A. (Psych.), Behavioural Consultant
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Susan graduated with a degree in Psychology in 1995 from Carleton University and has worked within the field of Applied Behaviour Analysis (ABA) for over 24 years in a variety of environments such as schools, daycares, group homes and most recently in a clinical setting at the Autism Intervention Program, Children’s Hospital of Eastern Ontario, as a Senior Therapist. Over her career, she has worked with typically developing children as well as children and adults with special needs.

Specializing in the reduction of problem behaviours such as aggression, tantrums, non-compliance, and feeding issues, Susan utilizes positive, evidence-based strategies to teach children functional communication and socialization skills in order to replace their reliance upon negative behaviours. Parents play an active and essential role in the generalization of their child’s new skills and will be taught how to manage his/her behaviour on an on-going basis.

Susan also focuses on skill acquisition and is able to help your child learn tasks such as independence in routines, dressing, grooming & hygiene, toileting and communication. Parents will participate in teaching their child the desired skill and learn how to apply this new expertise to up-coming goals for their child. .

Susan provides behavioural services for children under the supervision of Dr. Linda Reinstein, Clinical Psychologist. Fees for behavioural consultation may be eligible for reimbursement through third-party insurance plans.

Alyssa Kyte, Board Certified Assistant Behaviour Analyst
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Alyssa Kyte is a Board Certified Assistant Behaviour Analyst (BCaBA) with over 8 years of experience working in the field of ABA. She has a Bachelor of Arts (B.A.) honours degree in Psychology, graduate certificate in Autism & Behavioural Science, a Master’s degree in Education (M.Ed.) with studies in teaching & learning, and has completed advanced coursework in Applied Behaviour Analysis (ABA).

Alyssa has provided behavioural services and consultation in residential, school, daycare, community, and clinical settings, including the Ontario Autism Program (OAP). She supports neurodiverse children, adolescents, and adults, including those on the autism spectrum, with developmental and/or learning disabilities, anxiety disorders, and attention difficulties who present with behavioural challenges and / or fundamental skill deficits.

Throughout the planning and implementation of ABA services, Alyssa focuses on skill development while prioritizing her learner’s physical and emotional safety, autonomy, and individuality. She creates highly motivating therapeutic conditions and ensures that learners are active and willing participants as they develop critical skills to be effective in their daily lives.

Services provided by Alyssa are overseen by Board Certified Behaviour Analyst (BCBA), Conrad Leung.

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