Cognitive (IQ) assessments are available for children (WISC-V), adolescents (WISC-V or WAIS-IV), and adults (WAIS-IV).

Adaptive behaviour assessments (Vineland Adaptive Behaviour Scale 3rd edition) are available for children, adolescents and adults.

Academic or educational assessments are also available for children, adolescents and adults using the WIAT-IV.

Diagnostic assessments for ASD are performed usually with a combination of self-report measures, informant report measures, semi-structured assessments using the Autism Diagnostic Observation Schedule 2 (ADOS-2), and parent/caregiver interview using the Autism Diagnostic Interview Revised (ADI-R). Careful exploration of differential diagnoses, including exploring the impact of any trauma, is performed using other measures and interviews to minimise misdiagnosis of ASD, particularly in adults.