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Fombonne, Eric; Marcin, Carlos; Manero, Ana Cecilia; Bruno, Ruth; Diaz, Christian; Villalobos, Michele; Ramsay, Katrina; Nealy, Benjamin – Journal of Autism and Developmental Disorders, 2016
There are no epidemiological data on autism for Mexico. This study was conducted to generate a first estimate of ASD prevalence in Mexico. We surveyed children age eight in Leon (Guanajuato). The sample was stratified in two strata: (1) children having special education and medical records (SEMR; N = 432) and (2) children attending regular schools…
Descriptors: Foreign Countries, Pervasive Developmental Disorders, Incidence, Student Records
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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 – Journal of Autism and Developmental Disorders, 2015
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…
Descriptors: Autism, Pervasive Developmental Disorders, Preschool Children, Mental Retardation
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Georgiades, Stelios; Boyle, Michael; Szatmari, Peter; Hanna, Steven; Duku, Eric; Zwaigenbaum, Lonnie; Bryson, Susan; Fombonne, Eric; Volden, Joanne; Mirenda, Pat; Smith, Isabel; Roberts, Wendy; Vaillancourt, Tracy; Waddell, Charlotte; Bennett, Teresa; Elsabbagh, Mayada; Thompson, Ann – Journal of Autism and Developmental Disorders, 2014
The latent class structure of autism symptoms from the time of diagnosis to age 6 years was examined in a sample of 280 children with autism spectrum disorder. Factor mixture modeling was performed on 26 algorithm items from the Autism Diagnostic Interview-Revised at diagnosis (Time 1) and again at age 6 (Time 2). At Time 1, a…
Descriptors: Autism, Pervasive Developmental Disorders, Symptoms (Individual Disorders), Children
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Zuckerman, Katharine E.; Hill, Alison P.; Guion, Kimberly; Voltolina, Lisa; Fombonne, Eric – Journal of Autism and Developmental Disorders, 2014
Autism Spectrum Disorders (ASDs) and childhood obesity (OBY) are rising public health concerns. This study aimed to evaluate the prevalence of overweight (OWT) and OBY in a sample of 376 Oregon children with ASD, and to assess correlates of OWT and OBY in this sample. We used descriptive statistics, bivariate, and focused multivariate analyses to…
Descriptors: Obesity, Correlation, Incidence, Children
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Zaidman-Zait, Anat; Mirenda, Pat; Duku, Eric; Szatmari, Peter; Georgiades, Stelios; Volden, Joanne; Zwaigenbaum, Lonnie; Vaillancourt, Tracy; Bryson, Susan; Smith, Isabel; Fombonne, Eric; Roberts, Wendy; Waddell, Charlotte; Thompson, Ann – Journal of Autism and Developmental Disorders, 2014
Path analysis within a structural equation modeling framework was employed to examine the relationships between two types of parent stress and children's externalizing and internalizing behaviors over a 4-year period, in a sample of 184 mothers of young children with autism spectrum disorder. Parent stress was measured with the Parenting Stress…
Descriptors: Path Analysis, Structural Equation Models, Stress Variables, Child Rearing
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Duku, Eric; Vaillancourt, Tracy; Szatmari, Peter; Georgiades, Stelios; Zwaigenbaum, Lonnie; Smith, Isabel M.; Bryson, Susan; Fombonne, Eric; Mirenda, Pat; Roberts, Wendy; Volden, Joanne; Waddell, Charlotte; Thompson, Ann; Bennett, Teresa – Journal of Autism and Developmental Disorders, 2013
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…
Descriptors: Factor Analysis, Validity, Measures (Individuals), Autism
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Miller, Judith S.; Bilder, Deborah; Farley, Megan; Coon, Hilary; Pinborough-Zimmerman, Judith; Jenson, William; Rice, Catherine E.; Fombonne, Eric; Pingree, Carmen B.; Ritvo, Edward; Ritvo, Riva-Ariella; McMahon, William M. – Journal of Autism and Developmental Disorders, 2013
The purpose of the present study was to re-examine diagnostic data from a state-wide autism prevalence study (n = 489) conducted in the 1980s to investigate the impact of broader diagnostic criteria on autism spectrum disorder (ASD) case status. Sixty-four (59%) of the 108 originally "Diagnosed Not Autistic" met the current ASD case definition.…
Descriptors: Autism, Mental Retardation, Intelligence Quotient, Classification
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Davidovitch, Michael; Hemo, Beatriz; Manning-Courtney, Patricia; Fombonne, Eric – Journal of Autism and Developmental Disorders, 2013
The prevalence of autism spectrum disorders has been steadily rising. In most parts of the world, rates as high as 1% are reported, including in the United States. In Israel, previously reported prevalence rates have been in the 0.2% range, and were based on parental reporting of diagnosis. In this study, records from one of the largest Israeli…
Descriptors: Autism, Foreign Countries, Incidence, Pervasive Developmental Disorders
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Hambly, Catherine; Fombonne, Eric – Journal of Autism and Developmental Disorders, 2012
The impact of bilingual exposure on language learning has not been systematically studied in children with Autism Spectrum Disorders. This study compared the social abilities and language levels of children (mean age = 56 months) with ASDs from bilingual (n = 45) and monolingual (n = 30) environments. Bilingually-exposed children were subgrouped…
Descriptors: Autism, Infants, Interpersonal Communication, Interaction
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Pinborough-Zimmerman, Judith; Bakian, Amanda V.; Fombonne, Eric; Bilder, Deborah; Taylor, Jocelyn; McMahon, William M. – Journal of Autism and Developmental Disorders, 2012
This study examined changes in the administrative prevalence of autism spectrum disorders (ASD) in Utah children from 2002 to 2008 by record source (school and health), age (four, six, and eight), and special education classification. Prevalence increased 100% with 1 in 77 children aged eight identified with ASD by 2008. Across study years and age…
Descriptors: Incidence, Autism, Classification, Special Education
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Reisinger, Lisa M.; Cornish, Kim M.; Fombonne, Eric – Journal of Autism and Developmental Disorders, 2011
The present study examined diagnostic differentiation between school-aged children with autism spectrum disorders (ASD) and children with pragmatic language impairment (PLI). Standardized diagnostic instruments were used to investigate the relationship between severity of "autism triad" impairments and group membership. The Autism Diagnostic…
Descriptors: Autism, Language Impairments, Pragmatics, Clinical Diagnosis
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Quintin, Eve-Marie; Bhatara, Anjali; Poissant, Helene; Fombonne, Eric; Levitin, Daniel J. – Journal of Autism and Developmental Disorders, 2011
Individuals with Autism Spectrum Disorders (ASD) succeed at a range of musical tasks. The ability to recognize musical emotion as belonging to one of four categories (happy, sad, scared or peaceful) was assessed in high-functioning adolescents with ASD (N = 26) and adolescents with typical development (TD, N = 26) with comparable performance IQ,…
Descriptors: Autism, Intelligence Quotient, Adolescents, Short Term Memory
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Georgiades, Stelios; Szatmari, Peter; Duku, Eric; Zwaigenbaum, Lonnie; Bryson, Susan; Roberts, Wendy; Fombonne, Eric; Mirenda, Pat; Smith, Isabel; Vaillancourt, Tracy; Volden, Joanne; Waddell, Charlotte; Thompson, Ann – Journal of Autism and Developmental Disorders, 2011
This study examined the phenotypic overlap between core diagnostic features and emotional/behavioral problems in a sample of 335 preschool children with autism spectrum disorder (ASD). Results from principal component analysis (2 components; 49.70% variance explained) suggested substantial phenotypic overlap between core diagnostic features and…
Descriptors: Autism, Preschool Children, Pervasive Developmental Disorders, Behavior Problems
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Parr, Jeremy R.; Le Couteur, Ann; Baird, Gillian; Rutter, Michael; Pickles, Andrew; Fombonne, Eric; Bailey, Anthony J. – Journal of Autism and Developmental Disorders, 2011
The characteristics of early developmental regression (EDR) were investigated in individuals with ASD from affected relative pairs recruited to the International Molecular Genetic Study of Autism Consortium (IMGSAC). Four hundred and fifty-eight individuals with ASD were recruited from 226 IMGSAC families. Regression before age 36 months occurred…
Descriptors: Autism, Child Development, Pervasive Developmental Disorders, Siblings
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Paula, Cristiane S.; Ribeiro, Sabrina H.; Fombonne, Eric; Mercadante, Marcos T. – Journal of Autism and Developmental Disorders, 2011
This pilot study presents preliminary results concerning the prevalence of Pervasive Developmental Disorder (PDD) in South America. It was a three-phase study conducted in a typical town in Southeast Brazil. Case definition was based in a combination of standardized instruments and clinical evaluations by experts. The prevalence of PDD was…
Descriptors: Incidence, Pervasive Developmental Disorders, Clinical Diagnosis, Foreign Countries
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