Investigating the measurement properties of the social responsiveness scale in preschool children with autism spectrum disorders.
The purpose of this study was to examine the measurement properties of the Social Responsiveness Scale in an accelerated longitudinal sample of 4-year-old preschool children with the complementary approaches of categorical confirmatory factor analysis and Rasch analysis. Measurement models based on the literature and other hypothesized measurement models which were tested using categorical confirmatory factor analysis did not fit well and were not unidimensional. Rasch analyses showed that a 30-item subset met criteria of unidimensionality and invariance across item, person, and over time; and this subset exhibited convergent validity with other child outcomes. This subset was shown to have enhanced psychometric properties and could be used in measuring social responsiveness among preschool age children with Autism Spectrum Disorders.
Offord Centre for Child Studies, McMaster University, Hamilton, ON, Canada.
Eric
E
Duku
Tracy
T
Vaillancourt
Peter
P
Szatmari
Stelios
S
Georgiades
Lonnie
L
Zwaigenbaum
Isabel M
IM
Smith
Susan
S
Bryson
Eric
E
Fombonne
Pat
P
Mirenda
Wendy
W
Roberts
Joanne
J
Volden
Charlotte
C
Waddell
Ann
A
Thompson
Teresa
T
Bennett
D002170:Canada; D002659:Child Development Disorders, Pervasive / Q000175:diagnosis* / Q000503:physiopathology; D002675:Child, Preschool; D015331:Cohort Studies; D005163:Factor Analysis, Statistical; D006801:Humans; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics / Q000295:instrumentation; D015203:Reproducibility of Results; D012919:Social Behavior; D012938:Social Perception; D011795:Surveys and Questionnaires