Understanding Cognitive Assessments for Identifying Intellectual Disabilities & Accessing Disability Services
Comprehensive assessments and guidance to help families navigate next steps with clarity and confidence.
Individuals and families often require additional financial, educational, or legal supports when caring for a loved one with a disability. At Constellation Psychology, we provide comprehensive cognitive assessments in Calgary and surrounding areas for children, teens, and young adults transitioning into adulthood to help determine whether criteria for an Intellectual Developmental Disorder (Intellectual Disability) are met. Intellectual Disability is characterized by significant limitations in both intellectual functioning—such as reasoning, problem‑solving, abstract thinking, and learning—and adaptive functioning across conceptual, social, and practical daily‑living skills.
What Cognitive Assessments Include
Cognitive assessments evaluate how an individual thinks, learns, and processes information. These assessments help clarify strengths and areas of need.
To ensure accuracy and alignment with DSM‑5‑TR diagnostic criteria, we use standardized, evidence‑based measures appropriate for each age group.
- For individuals 16 years old and younger, we administer the Wechsler Intelligence Scale for Children – Fifth Edition (WISC‑V), which evaluates verbal comprehension, visual‑spatial reasoning, fluid reasoning, working memory, and processing speed.
- For individuals 17 years and older, we use the Wechsler Adult Intelligence Scale – Fourth Edition (WAIS‑IV) to assess similar core cognitive domains with adult‑normed scores.
To understand real‑world functioning and determine whether DSM‑5‑TR criteria are met—particularly when assessing for Intellectual Disability or adaptive functioning concerns—we also include the Adaptive Behavior Assessment System – Third Edition (ABAS‑3), which measures conceptual, social, and practical daily‑living skills. Together, these tools provide a clear picture of how an individual thinks, learns, and functions day‑to‑day, supporting informed decision‑making at home, school, and in the community.
While we do not determine eligibility for specific programs, our assessments provide the psychological documentation and diagnosis often required as part of these application processes, and we guide families through the steps involved so they feel informed and supported throughout.
Accessing Disability Services and Supports
Helping families navigate financial, educational, and community resources.
Many disability‑related programs require documentation from qualified professionals. We assist families by providing the psychological components typically needed for applications and by helping them understand program requirements.
- Persons with Developmental Disabilities (PDD): We provide the cognitive and adaptive functioning assessment often required for PDD applications. Individuals can apply starting at age 16 (services begin at 18). PDD requires documentation showing a developmental disability, including significant limitations in intellectual and adaptive functioning with onset before age 18. Psychological assessments completed by a Registered Psychologist are used to determine whether intellectual functioning falls in a range commonly associated with developmental disabilities (e.g., an IQ around 70 or below).
- Assured Income for the Severely Handicapped (AISH): AISH requires a medical form completed by a healthcare provider. Psychological assessment results may be included as supporting documentation, depending on the individual’s needs and circumstances.
- Disability Tax Credit (T‑2201): We complete the psychological sections of the T‑2201 form to certify impairment in mental functions necessary for everyday life.
- Family Services for Children with Disabilities (FSCD): For children, we offer guidance and documentation to support FSCD applications, including programs such as Developmental Aide or Specialized Services, when appropriate.
Our role is to provide clear, evidence‑based assessment information and help families understand how this information may be used within various provincial systems. Final eligibility decisions are made by the respective government programs.
Cognitive Assessment for Disability Services
The cognitive and adaptive functioning assessment used for PDD/AISH applications and for identifying an Intellectual Developmental Disorder (Intellectual Disability) takes approximately 7 hours to complete and is offered at a flat fee of $1,645.00. The process includes a two‑hour appointment beginning with a 45‑minute consultation, followed by approximately 1.5 hours of standardized cognitive testing (such as the WISC‑V or WAIS‑IV), as well as completion of adaptive functioning questionnaires by caregivers, teachers, the individual (when appropriate), and other familiar observers to provide a multi‑rater perspective.
A comprehensive written report is provided, and a feedback meeting is scheduled to review results and discuss the findings. From the initial intake to the final feedback meeting, the typical assessment timeline is approximately four to six weeks, depending on scheduling and the timely return of questionnaires.
