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, Behaviour Analyst
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Conrad Leung is a Registered Behaviour Analyst registered with the College of Psychologists and Behaviour Analysts of Ontario (CPBAO) and 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 or without 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 provides training and consultative services to behavioural organizations, and behaviour analysts seeking to build capacity in the assessment and treatment of severe problem behaviour.

Conrad has over 15 years experience working in the field of Applied Behaviour Analysis (ABA) in clinical settings including the Provincial Autism Program, school boards, group and residential care, and within the community. 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 Behavioural 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.

Susan Lawther, B.A. (Psych.), Senior Therapist/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 28 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 services may be eligible for reimbursement through third-party insurance plans.

Alyssa Kyte, Behaviour Analyst
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Alyssa is a Registered Behaviour Analyst registered with the College of Psychologists and Behaviour Analysts of Ontario (CPBAO) and a Board Certified Behaviour Analyst (BCBA), with a masters and bachelors degree through University of Ottawa (M.Ed. Teaching & Learning, B.A Psychology) and a graduate certificate in Autism & Behavioural Science through St. Lawrence College.

Alyssa provides behaviour analytic (ABA) services to children, adolescents, and adults who present with behavioural challenges and/or fundamental skill deficits. She has provided ABA services in a variety of roles since 2014 including in-home, school, daycare, community, and clinical settings.

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

Keeva MacLeod, Registered Psychotherapist
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Keeva MacLeod is a Registered Psychotherapist with the College of Registered Psychotherapists of Ontario (CRPO). Keeva provides psychotherapy services and psychometry services to children and youth under the supervision of Dr. Demark. This supervision is part of her registration process with the College of Psychologists of Ontario. Fees for psychotherapy sessions may be eligible for reimbursement through third-party insurance plans.

Keeva strives to create a warm, collaborative, nonjudgmental space in which clients can explore their challenges and grow. Keeva incorporates cognitive-behavioural therapy, mindfulness-based approaches and person-centered therapy into her practice, offering an integrative approach that aligns with the client's unique needs, goals, and life circumstances. Some of her practice areas include anxiety, depression, learning disabilities, attention disorders, life transitions and low self-esteem.

Keeva received a Bachelor of Arts (Honours) degree in Psychology from York University and a Master of Education in Counselling Psychology degree from the University of Ottawa. She will be beginning the Doctor of Education in Counselling Psychology, School Field at the University of Toronto in 2024. In addition, Keeva is currently working for the OCDSB as a psycho-educational consultant. Due to her work with the school board, Keeva is unable to provide services to students attending A. Lorne Cassidy Elementary School, Alta Vista Public School, Colonel By Secondary School, or Pleasant Park Public School.

Christine Park, Behaviour Analyst
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Christine Park is a Registered Behaviour Analyst registered with the College of Psychologists and Behaviour Analysts of Ontario (CPBAO), and a Board Certified Behaviour Analyst (BCBA) who focuses on supporting children with developmental disabilities using the principles of Applied Behaviour Analysis (ABA). She is dedicated in providing effective programming in a safe and compassionate manner to her clients and ensures generalization can occur in various environments.

Christine has over 10 years of experience working in the field of ABA and early child development in different educational settings in both Montreal and Ottawa. She completed her Masters in Special Education (Specialization in Applied Behaviour Analysis) at Arizona State University. She is a graduate of Carleton University (B.Sc. in Neuroscience and Mental Health), Algonquin College (Autism and Behavioural Science & Early Childhood Education).


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