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Type of Measure: The Childhood Autism Spectrum Test, formerly known as the Childhood Asperger’s Syndrome Test is a 37 item parental questionnaire that screens for possible cases of autism spectrum conditions and related social and communication conditions.

Target Population: School aged children aged 4-11

Measurement properties and previous use: The tool has been evaluated in several papers and has shown good sensitivity and specificity when using a score cut-point of > 15 (maximum possible score is 31). The positive predictive value is moderate and the test has good validity and has been shown to be reliable. A study done in 2005 showed that the test has good test-retest reliability and that 97% of children did not move between score groups Williams et.al.

Languages: English and Chinese

Authors and Citations: F. Scott, S. Baron-Cohen, P. Bolton and C. Brayne, (2002) The CAST (Childhood Asperger Syndrome Test) : Preliminary development of UK screen for mainstream primary-school children Autism 6(1):9-31

J. Williams, F. Scott, C.Stott, C. Allison, P. Bolton, S. Baron- Cohen and C. Brayne, (2004) The CAST (Childhood Asperger Syndrome Test) : test accuracy Autism :45-68

Licence: From the website: Our tests are posted on our website to enable free access to academic researchers. None of them are diagnostic: No single score on any of our tests or questionnaires indicates that an individual has an Autism Spectrum Condition (ASC). If you are concerned that you, or a friend or relative, may have ASC, please discuss these concerns with your GP or family doctor or ask the National Autistic Society (NAS) or equivalent charity in your country, for advice.

Link to measure: Childhood Asperger’s Syndrome Test

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