ADHD Assessment for Teens & Youth

When families reach out

• Grades that don't match how capable a teen is
• Constant procrastination, missed assignments or disorganization
• Trouble focusing in class or while studying
• Restlessness, impulsive decisions or risk-taking
• Low motivation, frustration or low self-esteem about school
• Preparing for post-secondary school and the supports that may be needed there

A process that includes the teen

Teens are active participants in their own assessment. Dr. Kerris meets with them directly by video to hear their own experience, and also gathers history and questionnaires from parents and, where helpful, teachers. Testing of attention, thinking and learning skills may be included to understand how the teen learns and to rule out other explanations such as learning difficulties, anxiety, low mood or poor sleep.

Results are shared in a feedback session that includes the teen, in language that makes sense to them, so the findings feel like something useful rather than a label.

School and post-secondary supports

The written report includes recommendations for home and school. High schools may use it when planning supports such as an IEP. Colleges and universities usually ask for documentation from a qualified professional, such as a psychologist, before arranging academic accommodations, so it's worth asking each school's accessibility office what they need.

Why Choose a Comprehensive Assessment Rather Than an Online Quiz?

Online ADHD and Autism quizzes or screening questionnaires can be useful starting points, but they cannot officially establish a diagnosis.

A comprehensive assessment by a psychologist goes further by examining developmental history, current functioning, strengths, challenges, and the possible influence of other psychological, medical, or environmental factors.

This means that, rather than relying on a single questionnaire score, Dr. Kerris integrates information from multiple sources using professional clinical judgment.

The goal isn't simply to determine whether someone meets diagnostic criteria. It's to develop a meaningful clinical picture that can guide appropriate recommendations and next steps.

About Dr. Kerris Oates

Assessments are provided by Dr. Kerris Oates, Ph.D., C.Psych., a Registered Psychologist with the College of Psychologists and Behaviour Analysts of Ontario since 2008. She has worked in private practice, multidisciplinary medical clinics, educational settings and specialized mental health programs, and is an Assistant Clinical Professor at McMaster University's Michael G. DeGroote School of Medicine. Her approach is warm, collaborative, culturally responsive and strengths-based.