developmental & behavioral screening tool manual ... - UCSF Fresno

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D E V E L O P M E N T A L & B E H A V I O R A L S C R E E N I N G T O O L M A N U A LScreening ToolDescriptionStandardizationReliabilityValidityAccuracyM-CHAT (Modified Checklist for Autism inToddlers) 16-30 monthsThe M-CHAT is an extension of the CHAT which was developed inGreat Britain on 16,000 children across several different studies.Consistently, certain items served in the identificati children withautism spectrum disorder while also correctly identifying children withother kinds of disabilities including language impairment and mentalretardation. The M-CHAT includes 9 items from the CHAT plus 21 newitems.1101 children participated in the norming studies for the M-CHAT andwere consecutive patients receiving well-care at pediatric practices orreferred for screening at early intervention services.Chronbach’s alpha was produced for all items and was found to be high(I=.85)Concurrent studies deployed a comprehensive battery including theBayley Scales of Infant Development, The Vineland Adaptive BehaviorScale, and the Childhood Autism Rating Scale. There were significantdifferences in the performance of children with autism spectrum disorder(ASD) on all items of the M-CHAT with the exception of an item tappingenjoying of rocking and swinging, and ability to walk.The M-CHAT was sensitive to the presence of ASD at 87%, and specificto non ASD at 99%. Over-referrals, while minimal given that positivepredictive value was 80%, tended to be children with otherdevelopmental disabilities.Ordering Information:FREE DOWNLOADAvailable from:http://www2.gsu.edu/~wwwpsy/faculty/robins.htm or www.firstsigns.org.The M-CHAT is a copyrighted instrument, and use of the M-CHAT must follow these guidelines:(1) Reprints/reproductions of the M-CHAT must include the copyright at the bottom (? ?1999 Robins, Fein,& Barton). No modifications can be made to items or instructions without permission from the authors.(2) The M-CHAT must be used in its entirety. There is no evidence that using a subset of items will be valid.(3) Parties interested in reproducing the M-CHAT in print (e.g., a book or journal article) or ele onically(e.g., as part of digital medical records or software packages) must contact Diana Robins to requestpermission (drobins@gsu.edu).P A G E 1 1
D E V E L O P M E N T A L & B E H A V I O R A L S C R E E N I N G T O O L M A N U A LScreening Tool PSI (Pediatric Symptom Checklist) 4-16yearsDescriptionReliabilityCost:The PSI is a one-page parent-completed screening questionnaire.It lists a broad range of children’s emotional and behavioralproblems that reflects parents’ impressions of their children’spsychosocial functioning.Test-retest reliability was found to be .84-.91. Strong internalconsistency was found as well as highly significant correlationsbetween individual PSC items and positive PSC screening scores.Validity Concurrent validity was found to be .79-.92.AccuracyFREE DOWNLOADAvailable from:http://www2.massgeneral.org/allpsych/psc/psc_home.htmThe PSC was found to have a specificity of 0.68 and a sensitivity of0.95 when compared to clinicians’ ratings of children’s psychosocialdysfunction.P A G E 1 2
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