NPSCSPN is proud to support the Canadian standardization of the Wechsler Adult Intelligence Scale, Fifth Edition (WAIS-5 CDN), in partnership with Pearson Clinical. This national initiative plays a key role in developing culturally and contextually appropriate cognitive assessment tools for Canadian populations.

This study ensures that cognitive testing tools are normed on a diverse and representative sample of Canadians. It also provides professionals with the opportunity to engage with the WAIS-5 CDN before its official release and contribute feedback that will help shape the final version.

Clinician involved in the research: Dr. Nicolás F. Narvaez Linares

Inclusion criteria:

• The individual is between 16:0 and 90:11 years old;

• The individual resides in Canada;

• The individual is able to take the test in a standard manner (i.e., hear verbal instructions; see visual stimulus material presented; able to use fingers, hands, and arms to manipulate blocks and able to use a pen to write (tremors are allowed as long as the assigned tasks can be completed).

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Exclusion criteria:

​The individual may not participate if they:

• have a primary language other than English or is receiving services for English proficiency;

• are primarily nonverbal or uncommunicative;

• have any vision impairment or hearing loss that has not been corrected with appropriate aids (e.g., glasses, contact lenses, hearing aids);

• are not able to understand instructions and participate fully;

• have an upper extremity disability that would affect motor performance (with the exception of mild motor impairment occurring in groups such as the intellectual disability);

• have physical conditions, illnesses, or impairments that could impact cognitive functioning or test performance (with the exception of diabetes, hypothyroidism, and hypertension, as well as conditions or impairments associated with the specific special group);

• have a previous or current diagnosis of a neurological condition (e.g., seizure disorder, epilepsy, encephalitis, brain surgery, brain tumor, Parkinson’s disease, dementia, stroke) other than the condition of interest or as allowed for a given special group;

• have had a period of unconsciousness greater than 20 minutes related to a medical condition or traumatic brain injury (with the exception of the TBI study or caused by anesthesia for surgeries);

• have had chemotherapy in the last 2 months;

• have a history of electroconvulsive therapy or radiation treatment of the central nervous system;

• have a diagnosis of a psychiatric disorder (e.g., psychotic disorders, mood disorders, substance abuse or dependence);

• have significant current or recent functional decline related to cognitive status change;

• are not currently admitted to a hospital, inpatient treatment, or psychiatric facility, or government-funded residential and day support programs (with the exception of specified treatment settings that are pertinent to a given condition of interest);

• are not currently taking medication that might impact test performance (e.g., anticonvulsants, antipsychotics, opiates and some antidepressants and anxiolytics), except as appropriate to treat condition of interest or associated conditions as listed on the Exclusionary Medications list;

• have completed the WAIS-III, WAIS-IV, or WMS–IV in the last 12 months prior to the testing date;

• have completed any measure of intelligence in the last 6 months prior to the testing date

• cannot complete testing without the use of personal protective equipment;

• is a family member residing in the same household as the examiner;

• are the identical sibling (e.g., twin, triplet) of an examinee included in this same study

• have graduate-level training in psychology and are familiar with administration of intelligence test.