Assessment & Testing:
ADHD - Adult

At Mills | Gosse Psychology - We Help People.

To ensure we meet your needs effectively, please take a moment to complete our quick and secure online inquiry form for new clients. Once submitted, our intake coordinator will promptly get in touch.

To learn more about this service, please read the information provided below.

Please note: For children, we typically recommend a psychoeducational assessment.

Mills | Gosse Psychology - New Client Intake Form

About ADHD Assessment and Testing for Adults

Attention-Deficit/Hyperactivity Disorder (ADHD) is a neuro-developmental disorder that develops in childhood and typically manifests with significant attentional problems and/or hyperactivity and impulsivity that significantly impact academic functioning and behaviour in many settings. Additionally, a substantial proportion of children with ADHD will continue to demonstrate significant symptoms and impairments into adulthood. These include ongoing difficulty sustaining attention or focus on work, restlessness or over-activity, and impulsive behaviours, such as reckless spending or decision-making. For adults with ADHD, close relationships and school or work difficulties may be a concern. An adult ADHD assessment is a specialized evaluation to diagnose ADHD in adults for treatment planning and outlining needed accommodations or supports. It involves interviews with the individual and other observers, such as parents or spouses, to gather information about symptoms and functional impairments. Standardized rating scales, questionnaires, and cognitive tests evaluate ADHD symptoms, executive functions, and their impact on daily life. The assessment also considers developmental history, medical records, and academic performance.

The results of an adult ADHD assessment provide essential information for diagnosing ADHD, distinguishing it from other conditions, identifying co-occurring disorders, and developing appropriate treatment plans. This assessment is particularly valuable for individuals of all ages experiencing challenges related to attention, hyperactivity, impulsivity, and their effects on academic, occupational, or personal functioning.

We utilize the latest assessment measures available, and our testing protocols and reports meet all current professional standards.

Psychological assessment services may be conducted by qualified assessors under supervision, and may not be performed by a psychologist directly. While this is a very common and widely accepted practice, some insurance plans do not cover such services. Therefore, you must inquire with your insurance provider to determine coverage.

Please note, if you are a student, and the findings of this assessment will be used specifically for academic accommodations or support at school, the adult ADHD assessment will likely not be the most beneficial service for you. For students, we typically recommend undergoing a psychoeducational assessment.

Appointments:

  • Appointments are held in person at our head office in Ajax, Ontario.

  • Appointments are conducted Monday to Friday during regular business hours.

  • We also offer full-day testing.

Scheduling:

Our adult ADHD assessment process typically includes:

  • Patient testing (3 hrs, in-person).

  • Feedback Session and Diagnosis Review to communicate the results (1 hour, typically by telephone).

Fees, Payments & Receipts:

  • The fee for this service ranges from $2,700 - $3,825.

  • To reserve your assessment, a retainer of $500 is required.

  • We accept payment by Visa, MasterCard, American Express, or e-transfer.

  • We kindly ask that a valid credit card be provided to keep securely on file.

Insurance:

  • Some insurance plans may cover this service; however, we recommend you check your coverage with your insurance provider. We are happy to provide you with an estimate upon request, once we confirm we can proceed with the assessment.

  • Receipts will be issued in the Supervising Psychologist’s name and registration number after each payment is made, and will also include the psychometrist’s name and credentials, if applicable.

Report:

  • The final report will be prepared within 6-8 weeks after the final testing appointment, provided that all necessary documentation is completed and returned to us promptly.

  • Once the report is complete, we will contact you to schedule a detailed feedback session to discuss the report and address any questions or concerns you may have.

  • Please note that we cannot guarantee that you will receive a diagnosis of ADHD following this assessment. This will depend on the clinical opinion of the assessors and the availability of sufficient clinical data for a diagnosis. All parties must acknowledge that booking such an assessment will not necessarily result in the desired diagnosis. ADHD is a neurodevelopmental disorder, and data on childhood functioning (such as report cards, medical reports, or parent observations) is important in its assessment. However, we use many other measures of current and past functioning and always endeavour to conduct thorough and comprehensive assessments, even when background information may not be available. However, in some cases, it may not be possible to make definitive diagnostic conclusions about ADHD if there is a complete lack of data on childhood functioning.

  • Please note that any specific forms that you wish to have completed should be provided to the assessors at the outset of the evaluation, whenever possible.

Mills | Gosse Psychology - ADHD Testing and Assessment for Adults in Durham Region.

Have Any Further Questions?

We are here to help. Please reach out to our practice head office, and our dedicated team will be more than happy to provide the assistance you need and address any inquiries you may have.