Stability and Change in the Cognitive and Adaptive Behaviour Scores of Preschoolers with Autism Spectrum Disorder

We examined the stability of cognitive and adaptive behaviour standard scores in children with autism spectrum disorder (ASD) between diagnosis and school entry approximately age 6. IQ increased 18 points in 2-year-olds, 12 points in 3-year-olds, and 9 points in 4-year-olds (N = 281). Adaptive behav...

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Bibliographic Details
Published in:Journal of autism and developmental disorders 2015-09, Vol.45 (9), p.2691-2703
Main Authors: Flanagan, Helen E., Smith, Isabel M., Vaillancourt, Tracy, Duku, Eric, Szatmari, Peter, Bryson, Susan, Fombonne, Eric, Mirenda, Pat, Roberts, Wendy, Volden, Joanne, Waddell, Charlotte, Zwaigenbaum, Lonnie, Bennett, Teresa, Elsabbagh, Mayada, Georgiades, Stelios
Format: Article
Language:English
Subjects:
Adaptation, Psychological
Adjustment (to Environment)
Autism
Autism Spectrum Disorder - psychology
Behavior Rating Scales
Behavioral assessment
Behavioral Science and Psychology
Care and treatment
Child
Child and School Psychology
Child, Preschool
Clinical Diagnosis
Cognition
Cognitive Ability
Cognitive Development
Criteria
Decision Making
Diagnosis
Disability Identification
Female
Humans
Male
Mental Retardation
Neurosciences
Original Paper
Pediatrics
Pervasive Developmental Disorders
Preschool Children
Psychology
Public Health
Scores
Thinking Skills
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Summary:We examined the stability of cognitive and adaptive behaviour standard scores in children with autism spectrum disorder (ASD) between diagnosis and school entry approximately age 6. IQ increased 18 points in 2-year-olds, 12 points in 3-year-olds, and 9 points in 4-year-olds (N = 281). Adaptive behaviour scores increased 4 points across age groups (N = 289). At school entry, 24 % of children met criteria for intellectual disability (cognitive and adaptive behaviour scores
ISSN:0162-3257
1573-3432
DOI:10.1007/s10803-015-2433-6