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Diagnostic Assessment Tools

The assessment tools used for identifying Autistic Spectrum Conditions are the ADOS 2 (use with the individual) and ADI-R (used with parents/carers).

The ADOS 2 assessment looks at the social interaction between the assessor and the individual. It consists of a series of table top tasks that take between 30 and 60 minutes. There are no invasive procedures involved and there are no blood tests or tissue samples taken. It is very helpful if the ADOS 2 assessment is video recorded in order to enable the assessor to revisit the assessment prior to writing the report.

ADI-R = Autism Diagnostic Interview – Revised

The Autism Diagnostic Interview-Revised (ADI-R) is a structured interview conducted with someone who has known the individual closely since early childhood. In the case of a child being assessed, this will be the parent or caregiver. For adults being assessed this would preferably be a parent or care giver, but it may be possible to carry this out with an older sibling or other relative. The ADI-R takes between 2 and 3 hours to complete, again it is very helpful if this interview is video recorded. The interview covers the referred individual’s full developmental history.

WISC IV/WAIS IV intelligence testing

This test provides the most advanced method of testing the cognitive ability of adults and children. The procedure illuminates both perceptual and verbal intelligence. It was originally introduced in the late 1930’s and has undergone several subsequent revisions. The procedure involves many protocols that test verbal processing, conceptual processing, working memory index and processing speed index. Each of these concepts provides valuable information that can be used to identify both strengths and weaknesses in performance. Early identification assists targeted remedial input.

Checklist of Autism in Toddlers (CHAT)

Childhood Autism Rating Scales (CARS)

If you would like to learn more about any aspect of the protocols please contact Lighthouse.

Cognitive testing – Cognitive testing is also available as a separate service.