intellectual developmental disorder (IDD)

An IDD means that a child has challenges with thinking and learning in several areas. This can include difficulties with reasoning, solving problems, planning, understanding complex ideas, making good decisions, and learning in school or from experiences.  IDD is a term used to describe individuals with significant limitations in intellectual functioning and adaptive behaviour and was formally known as intellectual disability. 

An IDD assessment with a suitably trained and experienced psychologist provides clarity around diagnosis.  Our assessment package assists in diagnosis based on DSM 5tr criteria.

  • Cognitive assessment using the WPPSI IV, WISC V or WAIS IV – 3 hours

    Cognitive assessments help to determine an individual’s learning capabilities by identifying cognitive strengths and weaknesses with the development of individualised support and learning plans.  They are used to assist in the identification of various neurodevelopmental and learning differences such as intellectual delays, giftedness, specific learning disorders, autism and ADHD.

    The cognitive assessment used is the WPPSI IV for children aged 2 years 6 months to 7 years 7 months and the WISC V for children aged 6 years 0 months to 16 years 11 months or the WAIS IV for adolescents and adults aged 16 years to 90 years, 11 months. 

  • Adaptive behaviour assessment using the Vineland-3 or ABAS-3 - 2 hours

    The Vineland Adaptive Behavior Scales, 3rd Edition (Vineland-3) is a standardised assessment tool to measure adaptive behaviour and support the diagnosis of intellectual and developmental disabilities, autism and developmental delays. 

    The Adaptive Behaviour Assessment System, 3rd edition (ABAS-3) measures adaptive behaviour and is particularly useful for evaluating those with developmental delays, autism spectrum disorder, intellectual disability, learning disabilities, neuropsychological disorders, and sensory or physical impairments.

Total Time: 10 hours includes assessment sessions, screening questionnaires, review of all relevant information, report writing time and feedback.

Cost: $2300 ($1850 for assessment where a cognitive assessment has already been completed).

A feedback session follows assessment and the assessment report is provided. The assessment report can be provided to relevant professionals by the family.