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Direct linkMcVey, Alana J.; Liu, Quinn; Bedford, Saashi A.; Zaidman-Zait, Anat; Szatmari, Peter; Smith, Isabel M.; Vaillancourt, Tracy; Zwaigenbaum, Lonnie; Bennett, Teresa; Duku, Eric; Elsabbagh, Mayada; Georgiades, Stelios; Kerns, Connor M. – Autism: The International Journal of Research and Practice, 2023
Research regarding autistic children's sibling relationship quality is mixed, although some literature suggests poorer quality compared to children with other disabilities or who are neurotypical. Little is known about how the clinical characteristics of autistic children relate to parent perceptions of sibling relationship quality. We drew data…
Descriptors: Autism Spectrum Disorders, Parent Attitudes, Sibling Relationship, Children
Lee, Vivian; Duku, Eric; Zwaigenbaum, Lonnie; Bennett, Teresa; Szatmari, Peter; Elsabbagh, Mayada; Kerns, Connor; Mirenda, Pat; Smith, Isabel M.; Ungar, Wendy J.; Vaillancourt, Tracy; Volden, Joanne; Waddell, Charlotte; Zaidman-Zait, Anat; Thompson, Ann; Georgiades, Stelios – Autism: The International Journal of Research and Practice, 2020
Temperament is a construct that is relatively stable over time but varies between individuals. Research suggests that children with autism spectrum disorder have a 'reactive' temperament profile when compared to peers with or without disabilities. However, our understanding of how temperament varies within children with autism and how it relates…
Descriptors: Personality Traits, Severity (of Disability), Symptoms (Individual Disorders), Behavior Problems
Sacrey, Lori-Ann R.; Bryson, Susan; Zwaigenbaum, Lonnie; Brian, Jessica; Smith, Isabel M.; Roberts, Wendy; Szatmari, Peter; Vaillancourt, Tracy; Roncadin, Caroline; Garon, Nancy – Autism: The International Journal of Research and Practice, 2018
This study examined whether a novel parent-report questionnaire, the Autism Parent Screen for Infants, could differentiate infants subsequently diagnosed with autism spectrum disorder from a high-risk cohort (siblings of children diagnosed with autism spectrum disorder (n = 66)) from high-risk and low-risk comparison infants (no family history of…
Descriptors: Autism, Infants, Pervasive Developmental Disorders, Parents
Ali, Yamna; Anderson, Laura N.; Smile, Sharon; Chen, Yang; Borkhoff, Cornelia M.; Koroshegyi, Christine; Lebovic, Gerald; Parkin, Patricia C.; Birken, Catherine S.; Szatmari, Peter; Maguire, Jonathon L. – Autism: The International Journal of Research and Practice, 2019
Several studies have suggested an association between vitamin D in childhood and autism spectrum disorder. No prospective studies have evaluated whether lower vitamin D levels precede ASD diagnoses -- a necessary condition for causality. The objective of this study was to prospectively evaluate whether vitamin D serum levels in early childhood was…
Descriptors: Autism, Pervasive Developmental Disorders, Nutrition, Preschool Children
Zwaigenbaum, Lonnie; Bryson, Susan E.; Brian, Jessica; Smith, Isabel M.; Sacrey, Lori; Armstrong, Vickie; Roberts, Wendy; Szatmari, Peter; Garon, Nancy; Vaillancourt, Tracy; Roncadin, Caroline – Child Development, 2021
The objectives were to characterize behavioral signs of autism spectrum disorder (ASD) in younger siblings of diagnosed children (high-risk; HR) and examine classification features of the Autism Observation Scale for Infants (AOSI). Participants (501 HR and 180 low-risk [LR]) were assessed between 6 and 18 months using the AOSI and at age 3 for…
Descriptors: Autism, Pervasive Developmental Disorders, Symptoms (Individual Disorders), Infant Behavior
Tesfaye, Rackeb; Courchesne, Valerie; Yusuf, Afiqah; Savion-Lemieux, Tal; Singh, Ilina; Shikako-Thomas, Keiko; Mirenda, Pat; Waddell, Charlotte; Smith, Isabel M.; Nicholas, David; Szatmari, Peter; Bennett, Terry; Duku, Eric; Georgiades, Stelios; Kerns, Connor; Vaillancourt, Tracy; Zaidman-Zait, Anat; Zwaigenbaum, Lonnie; Elsabbagh, Mayada – Autism: The International Journal of Research and Practice, 2019
Most research regarding youth with autism spectrum disorder has not focused on their first-person perspectives providing limited insight into methodologies best suited to eliciting their voices. We conducted a synthesis of methods previously used to obtain the first-person perspectives of youth with various disabilities, which may be applicable to…
Descriptors: Autism, Pervasive Developmental Disorders, Youth, Disabilities
Lai, Meng-Chuan; Lombardo, Michael V.; Ruigrok, Amber N. V.; Chakrabarti, Bhismadev; Auyeung, Bonnie; Szatmari, Peter; Happé, Francesca; Baron-Cohen, Simon – Autism: The International Journal of Research and Practice, 2017
Autobiographical descriptions and clinician observations suggest that some individuals with autism, particularly females, "camouflage" their social communication difficulties, which may require considerable cognitive effort and lead to increased stress, anxiety and depression. Using data from 60 age- and IQ-matched men and women with…
Descriptors: Autism, Pervasive Developmental Disorders, Gender Differences, Diagnostic Tests
Gentles, Stephen J.; Nicholas, David B.; Jack, Susan M.; McKibbon, K. Ann; Szatmari, Peter – Autism: The International Journal of Research and Practice, 2020
We report results from a large qualitative study regarding the process of parents "coming to understand the child has autism" starting from the time of initial developmental concerns. Specifically, we present findings relevant to understanding how parents become motivated and prepared for engaging in care at this early stage. The study…
Descriptors: Autism, Pervasive Developmental Disorders, Parents, Motivation
Sacrey, Lori-Ann R.; Zwaigenbaum, Lonnie; Bryson, Susan; Brian, Jessica; Smith, Isabel M.; Roberts, Wendy; Szatmari, Peter; Vaillancourt, Tracy; Roncadin, Caroline; Garon, Nancy – Journal of Autism and Developmental Disorders, 2021
Despite considerable progress in characterizing the early signs of autism spectrum disorder (ASD), more remains to be learned about how symptoms emerge in the first year of life. Parents with a new baby who already had at least one biological child diagnosed with ASD (high-risk) or no family history of ASD (low-risk) completed two measures when…
Descriptors: Siblings, Screening Tests, Autism, Pervasive Developmental Disorders
Beauchamp, Myriam L. H.; Rezzonico, Stefano; Bennett, Terry; Duku, Eric; Georgiades, Stelios; Kerns, Connor; Mirenda, Pat; Richard, Annie; Smith, Isabel M.; Szatmari, Peter; Vaillancourt, Tracy; Waddell, Charlotte; Zaidman-Zait, Anat; Zwaigenbaum, Lonnie; Elsabbagh, Mayada – Journal of Autism and Developmental Disorders, 2023
We examined the narrative abilities of bilingual and monolingual children on the autism spectrum (AS), whether bilinguals presented stronger social and pragmatic language abilities compared to monolinguals, and the link between narrative, social, and pragmatic language abilities. The narrative, social, and pragmatic language skills of school-aged…
Descriptors: Bilingualism, Monolingualism, Language Skills, 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
Brian, Jessica; Bryson, Susan E.; Smith, Isabel M.; Roberts, Wendy; Roncadin, Caroline; Szatmari, Peter; Zwaigenbaum, Lonnie – Autism: The International Journal of Research and Practice, 2016
Considerable evidence on autism spectrum disorder emergence comes from longitudinal high-risk samples (i.e. younger siblings of children with autism spectrum disorder). Diagnostic stability to age 3 is very good when diagnosed as early as 18-24 months, but sensitivity is weaker, and relatively little is known beyond toddlerhood. We examined…
Descriptors: Autism, Pervasive Developmental Disorders, Clinical Diagnosis, Toddlers
Cost, Katherine T.; Zaidman-Zait, Anat; Mirenda, Pat; Duku, Eric; Zwaigenbaum, Lonnie; Smith, Isabel M.; Ungar, Wendy J.; Kerns, Connor; Bennett, Theresa; Szatmari, Peter; Georgiades, Stelios; Waddell, Charlotte; Elsabbagh, Mayada; Vaillancourt, Tracy – Journal of Autism and Developmental Disorders, 2021
This study examined parental perceptions of the character traits of children with autism from early childhood to age 11. Parents (n = 153) provided descriptions of the "best things" about their children on the Child Behavior Checklist (CBCL) at ages 3-4, 7-8, and 10-11 years. Descriptions were coded using the framework of the Values in…
Descriptors: Parent Attitudes, Autism, Pervasive Developmental Disorders, Personality Traits
Lai, Meng-Chuan; Lombardo, Michael V.; Chakrabarti, Bhismadev; Ruigrok, Amber NV; Bullmore, Edward T.; Suckling, John; Auyeung, Bonnie; Happé, Francesca; Szatmari, Peter; Baron-Cohen, Simon – Autism: The International Journal of Research and Practice, 2019
Prior work has revealed sex/gender-dependent autistic characteristics across behavioural and neural/biological domains. It remains unclear whether and how neural sex/gender differences are related to behavioural sex/gender differences in autism. Here, we examined whether atypical neural responses during mentalizing and self-representation are…
Descriptors: Females, Autism, Pervasive Developmental Disorders, Adults
Georgiades, Stelios; Tait, Peter A.; McNicholas, Paul D.; Duku, Eric; Zwaigenbaum, Lonnie; Smith, Isabel M.; Bennett, Teresa; Elsabbagh, Mayada; Kerns, Connor M.; Mirenda, Pat; Ungar, Wendy J.; Vaillancourt, Tracy; Volden, Joanne; Waddell, Charlotte; Zaidman-Zait, Anat; Gentles, Stephen; Szatmari, Peter – Journal of Autism and Developmental Disorders, 2022
This study examined the trajectories of autistic symptom severity in an inception cohort of 187 children with ASD assessed across four time points from diagnosis to age 10. Trajectory groups were derived using multivariate cluster analysis. A two trajectory/cluster solution was selected. Change in trajectory slopes revealed a "turning…
Descriptors: Symptoms (Individual Disorders), Severity (of Disability), Children, Autism
