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Direct linkThelma E. Uzonyi; Elizabeth R. Crais; Linda R. Watson; Sallie W. Nowell; Grace T. Baranek – Journal of Autism and Developmental Disorders, 2025
This study explored the salient characteristics of transactions within parent-child engagement and investigated relationships between transactional characteristics and future identification of autism. The main aims of the study were to (1) examine if parents/children and their initial behaviors impact the length of transaction; (2) determine…
Descriptors: Autism Spectrum Disorders, Parent Child Relationship, Behavior, Interaction
Kavanaugh, Brian C.; Schremp, Christine A.; Jones, Richard N.; Best, Carrie R.; Sheinkopf, Stephen J.; Morrow, Eric M. – Journal of Autism and Developmental Disorders, 2023
The objective of this study was to determine the clinical features that moderate a later age at ASD diagnosis in females in a large sample of females with ASD. Within two large and independent ASD datasets (>20,000 females), females were first diagnosed with ASD 14-months later relative to males. This later age at diagnosis was moderated by a…
Descriptors: Clinical Diagnosis, Symptoms (Individual Disorders), Age Differences, Females
Courchesne, Valérie; Girard, Dominique; Jacques, Claudine; Soulières, Isabelle – Journal of Autism and Developmental Disorders, 2019
Intelligence in minimally verbal children on the autism spectrum (AS) is at risk of being underestimated. The present study investigated testability and cognitive profile of preschool autistic children using conventional tools and strength-informed tools. Fifty-two AS children and fifty-four typical children matched on age (31-77 months) were…
Descriptors: Preschool Children, Diagnostic Tests, Disability Identification, Autism
Harlee Onovbiona; Lauren Quetsch; Emily-Anne Del Rosario – Journal of Autism and Developmental Disorders, 2025
The goal of the present study was to compare profiles among Black families of autistic youth who were identified Early ([less than or equal to] 2 years of age), Mid (age 3 or 4), and Delayed ([greater than or equal to] 5 years of age) to better identify the characteristics that contribute to early ASD identification and delayed ASD identification.…
Descriptors: Infants, Toddlers, Infant Care, Preschool Children
Raza, Sarah; Zwaigenbaum, Lonnie; Sacrey, Lori-Ann R.; Bryson, Susan; Brian, Jessica; Smith, Isabel M.; Reid, Kyle; Roberts, Wendy; Szatmari, Peter; Vaillancourt, Tracy; Roncadin, Caroline; Garon, Nancy – Journal of Autism and Developmental Disorders, 2019
This study examined the potential of the short form of the Quantitative Checklist for Autism in Toddlers (Q-CHAT-10) to identify autism spectrum disorder (ASD) in a high-risk sibling cohort. High-risk (HR; siblings of children diagnosed with ASD) and low-risk (LR; no family history of ASD) toddlers were assessed prospectively at 18 and 24 months…
Descriptors: Autism, Pervasive Developmental Disorders, Toddlers, At Risk Persons
Avlund, Sara Højslev; Thomsen, Per Hove; Schendel, Diana; Jørgensen, Meta; Carlsen, Anders Helles; Clausen, Loa – Journal of Autism and Developmental Disorders, 2021
This study aimed to investigate factors associated with a delayed autism spectrum (ASD) diagnosis when compared to children with either no or early ASD diagnosis. Among 893 children assessed for ASD before age 8, 39% had no ASD at baseline, of which 21% received a later ASD diagnosis. Autism symptoms, diagnostic history of other developmental…
Descriptors: Autism, Pervasive Developmental Disorders, Clinical Diagnosis, Disability Identification
Bejarano-Martín, Álvaro; Canal-Bedia, Ricardo; Magán-Maganto, María; Fernández-Álvarez, Clara; Cilleros-Martín, María Victoria; Sánchez-Gómez, María Cruz; García-Primo, Patricia; Rose-Sweeney, Mary; Boilson, Andrew; Linertová, Renata; Roeyers, Herbert; Van der Paelt, Sara; Schendel, Diana; Warberg, Christine; Cramer, Susanne; Narzisi, Antonio; Muratori, Filippo; Scattoni, María Luisa; Moilanen, Irma; Yliherva, Anneli; Saemundsen, Evald; Loa Jónsdóttir, Sigríður; Efrim-Budisteanu, Magdalena; Arghir, Aurora; Papuc, Sorina Mihaela; Vicente, Astrid; Rasga, Celia; Rogé, Bernadette; Guillon, Quentin; Baduel, Sophie; Kafka, Johanna Xenia; Poustka, Luise; Kothgassner, Oswald D.; Kawa, Rafal; Pisula, Ewa; Sellers, Tracey; Posada de la Paz, Manuel – Journal of Autism and Developmental Disorders, 2020
Early services for ASD need to canvas the opinions of both parents and professionals. These opinions are seldom compared in the same research study. This study aims to ascertain the views of families and professionals on early detection, diagnosis and intervention services for young children with ASD. An online survey compiled and analysed data…
Descriptors: Autism, Pervasive Developmental Disorders, Family Attitudes, Disability Identification
McDonnell, Christina G.; Bradley, Catherine C.; Kanne, Stephen M.; Lajonchere, Clara; Warren, Zachary; Carpenter, Laura A. – Journal of Autism and Developmental Disorders, 2019
Differential diagnosis of autism spectrum disorder (ASD) is challenging, and uncertainty regarding a child's diagnosis may result in under-identification or prolonged diagnostic pathways. The current study examined diagnostic certainty, or how sure clinicians were that their diagnosis was accurate, among 478 toddler and preschool-aged children…
Descriptors: Clinical Diagnosis, Autism, Pervasive Developmental Disorders, Disability Identification
Sturner, Raymond; Howard, Barbara; Bergmann, Paul; Stewart, Lydia; Afarian, Talin E. – Journal of Autism and Developmental Disorders, 2017
This study examined the effect of age at completion of an autism screening test on item failure rates contrasting older (>20 months) with younger (<20 months) toddlers in a community primary care sample of 73,564 children. Items related to social development were categorized into one of three age sets per criteria from Inada et al.…
Descriptors: Autism, Screening Tests, Toddlers, Age Differences
Barton, Erin E.; Harris, Bryn; Leech, Nancy; Stiff, Lillian; Choi, Gounah; Joel, Tiffany – Journal of Autism and Developmental Disorders, 2016
States differ in the procedures and criteria used to identify ASD. These differences are likely to impact the prevalence and age of identification for children with ASD. The purpose of the current study was to examine the specific state variations in ASD identification and eligibility criteria requirements. We examined variations by state in…
Descriptors: Autism, State Policy, Educational Diagnosis, Disability Identification
Ouellette-Kuntz, Hélène; Coo, Helen; Lam, Miu; Breitenbach, Marlene M.; Hennessey, Paula E.; Jackman, Paulette D.; Lewis, M. E. Suzanne; Dewey, Deborah; Bernier, François P.; Chung, Amy M. – Journal of Autism and Developmental Disorders, 2014
In 2002/2003, the National Epidemiologic Database for the Study of Autism in Canada started capturing information on children diagnosed with autism in different regions of the country. Based on data collected through 2008 in Newfoundland and Labrador and 2010 in Prince Edward Island and Southeastern Ontario, the estimated average annual percent…
Descriptors: Foreign Countries, Autism, Children, Epidemiology
Armstrong, Rebecca; Whitehouse, Andrew J. O.; Scott, James G.; Copland, David A.; McMahon, Katie L.; Fleming, Sophie; Arnott, Wendy – Journal of Autism and Developmental Disorders, 2017
The current study examined the relationship between early language ability and autistic-like traits in adulthood, utilising data from 644 participants from a longitudinal study of the general population. Language performance at 2 years was measured with the Language Development Survey (LDS), and at 20 years the participants completed the…
Descriptors: Autism, Pervasive Developmental Disorders, Longitudinal Studies, Children
Jensen, Christina Mohr; Steinhausen, Hans-Christoph; Lauritsen, Marlene Briciet – Journal of Autism and Developmental Disorders, 2014
This study investigated time trends and associated factors of incidence rates of diagnosed autism spectrum disorders (ASD) across the lifespan from 1995 to 2010, using data from the Danish Psychiatric Central Research Registry. First time diagnosis of childhood autism, atypical autism, Asperger's syndrome, or pervasive developmental…
Descriptors: Foreign Countries, Incidence, Trend Analysis, Pervasive Developmental Disorders
Daniels, Amy M.; Mandell, David S. – Journal of Autism and Developmental Disorders, 2013
This study estimated compliance with American Academy of Pediatrics (AAP) guidelines for well-child care and the association between compliance and age at diagnosis in a national sample of Medicaid-enrolled children with autism (N = 1,475). Mixed effects linear regression was used to assess the relationship between compliance and age at diagnosis.…
Descriptors: Children, Compliance (Psychology), Age Differences, Clinical Diagnosis
Begeer, Sander; Mandell, David; Wijnker-Holmes, Bernadette; Venderbosch, Stance; Rem, Dorien; Stekelenburg, Fred; Koot, Hans M. – Journal of Autism and Developmental Disorders, 2013
To examine differences by sex in the timing of identification of individuals with autism spectrum disorders (ASD), survey data were collected in the Netherlands from 2,275 males and females with autistic disorder, Asperger's syndrome and PDD-NOS. Among participants less than 18 years of age, females with Asperger's syndrome were identified later…
Descriptors: Disability Identification, Females, Autism, Foreign Countries
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