The psychometric properties of the Quantitative-Checklist for Autism in Toddlers Q-CHAT as a measure of autistic traits in a community sample of Singaporean infants and toddlersReportar como inadecuado




The psychometric properties of the Quantitative-Checklist for Autism in Toddlers Q-CHAT as a measure of autistic traits in a community sample of Singaporean infants and toddlers - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Molecular Autism

, 6:40

First Online: 21 June 2015Received: 05 November 2014Accepted: 03 June 2015

Abstract

BackgroundThere is growing research evidence that subclinical autistic traits are elevated in relatives of individuals with autism spectrum disorder ASD, continuously distributed in the general population and likely to share common etiology with ASD. A number of measures have been developed to assess autistic traits quantitatively in unselected samples. So far, the Quantitative-Checklist for Autism in Toddlers Q-CHAT is one of very few measures developed for use with toddlers as young as 18 months, but little is known about its measurement properties and factor structure.

MethodsThe present study examined internal consistency, factor structure, test-retest stability, and convergent validity of the Q-CHAT in a sample of toddlers in Singapore whose caregivers completed the Q-CHAT at 18 n = 368 and 24 months n = 396.

ResultsThree factors were derived accounting for 38.1 % of the variance: social-communication traits, non-social-behavioral traits, and a speech-language factor. Internal consistency was suboptimal for the total and speech-language scores, but acceptable for the social-communication and non-social-behavioral factor scores. Scores were generally stable between 18 and 24 months. Convergent validity was found with the Pervasive Developmental Disorders subscale of the Child Behavior Checklist CBCL completed by caregivers when their children were 24 months. Q-CHAT total scores in this sample were higher than those reported in other unselected samples from the UK.

ConclusionsThe Q-CHAT was found to have a three-factor structure, acceptable internal consistency for its two main factor scores social-communication and non-social-behavioral, normally distributed scores in an unselected sample, and similar structure and measurement properties as those reported in other published studies. Findings are discussed in relation to existing literature and future directions for the validation of the Q-CHAT.

KeywordsAutism spectrum disorder Autistic traits Dimensional Assessment Measure Quantitative Checklist Toddlers Factor structure Psychometric properties AbbreviationsASDautism spectrum disorder

ASSQAutism Spectrum Screening Questionnaire

AQAutism Spectrum Quotient

BAPbroader autism phenotype

BISCUITBaby and Infant Screen for Children with aUtIsm Traits

CASTChildhood Autism Screening Test

CBCLChild Behavior Checklist

GUSTOGrowing Up in Singapore Towards Healthy Outcomes

EFAExploratory Factor Analysis

SRSSocial Responsiveness Scale

Q-CHATQuantitative Checklist for Autism in Toddlers

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Autor: I. Magiati - D. A. Goh - S. J. Lim - D. Z. Q. Gan - J. C. L. Leong - C. Allison - S. Baron-Cohen - A. Rifkin-Graboi

Fuente: https://link.springer.com/



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