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260 Soldiers Point Road Salamander Bay, NSW
Phone: 02 4919 1171 Fax: 02 4919 1487


Our comprehensive assessment process involves a range of evidence-based tools and techniques to assess and diagnose a range of developmental, educational and behavioural difficulties including:

  • Multi-disciplinary Autism Spectrum Disorder (NDIS Approved)
  • Educational Assessments (IQ / Cognitive, Specific Learning Disorders, ADHD)
  • Developmental Assessments (identifying developmental delay)
  • Adaptive Behaviour Assessments (including intervention recommendations and behavioural support)

We offer a range of diagnostic assessments using various tools including:

Cognitive Assessments

  • Wechsler Preschool and Primary Scale of Intelligence (WPPSI)
  • Wechsler Intelligence Scales for Children (WISC)
  • Wechsler Individual Achievement Test (WIAT)

Developmental Assessments

  • Griffith Mental Developmental Scales (GMDS)
  • Adaptive Behaviour Assessment System (ABAS)

Autism Spectrum Disorder & Behavioural Assessments

  • Autism Diagnostic Interview – Revised (ADI-R)
  • Autism Diagnostic Observation Schedule (ADOS)
  • Parent & Teacher rating scales (Child Behaviour Checklist and Teacher Report Form)
  • Adaptive Behaviour Assessment System (ABAS)

Wavelengths Allied Health has a team of professional psychologists providing a range of services for child and adult psychological testing and diagnostic evaluation. Assessments are conducted for individuals from the age of 2 years, where parents, caregivers, teachers or health professionals have identified developmental, cognitive and/or behavioural/emotional concerns. 

Information gathered during the initial appointments and assessments will be supplemented by a number of questionnaires, structured interviews, and observation scales. Our assessment services are very thorough, usually involving two practitioners, and is tailored to the specific needs of each client. Our process of assessment generally follows the structure outlined below.

At the initial appointment the clinician will gather comprehensive and detailed background information by interviewing the primary caregiver/s. Our clinician’s prefer to conduct this interview without the child or young person present, as this allows a candid approach to information sharing, and avoids causing humiliation or distress for the child.

Pre-verbal children may attend this appointment if the parent is lacking child-care options, however most parents find it easier to concentrate if this can be avoided.

Questionnaires will also be distributed to the carer/s and/or teachers at this appointment.

During the following assessment appointment/s a psychometric test will be administered to determine functioning. Depending on the test administered, this session may be 1-2 hours long and it may occur over several appointments.

Prior to the final report appointment a school visit may be deemed necessary by the consulting psychologist and will include one of our practitioners observing the child in their school environment. This will incur an additional cost.

At the final appointment feedback from the assessment and observations will be provided to the parents / carers. A detailed report will follow usually within a fortnight of this appointment.

Once again, it is recommended that the child or young person is not present at this appointment to allow for a candid discussion of the assessment results and future recommendations.

Following the first assessment appointment and with the consent from the client, ‘collateral’ information will be sought from the child’s school, another parent/carer, and any other professionals involved in order to assist in the comprehensive diagnostic process.

As this is a complex task, please allow at least 3-4 weeks from the date of the first appointment for the report to be finalised and distributed.

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