Publications by authors named "Amanda Dimachkie Nunnally"

Autism diagnosis in individuals with fragile X syndrome (FXS) or Down syndrome (DS) with co-occurring intellectual disability is complex since clinicians often must consider other co-occurring behavioral features. Understanding how best to assess the features of autism in individuals with these conditions is crucial. In this study, we consider the short-term and long-term psychometric consistency of the Autism Diagnostic Observation Schedule-2 (ADOS-2) calibrated comparison scores (CCSs) and ASD classifications in individuals with FXS or DS.

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New school transitions can be challenging for students on the autism spectrum. No published, evidence-based interventions exist to support families and teachers of students transitioning to elementary and secondary school during this critical period. Using Community Partnered Participatory Research, we developed Building Better Bridges (BBB), a caregiver coaching intervention that includes training on effective school communication, educational rights, advocacy, and child preparation strategies.

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Background: Parents of autistic children experience increased levels of caregiver strain and adverse mental health outcomes, even in comparison to parents of children with other neurodevelopmental disabilities. Previous studies have largely attributed these increased levels of mental health concerns to their child behavioral concerns and autism symptomatology, but less attention has been given to other potential child factors, such as child adaptive functioning. Additionally, little is known about potential protective factors, such as parents' emotion regulation (ER) abilities, that may ameliorate the experience of caregiver strain, anxiety, and depression.

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This study explores sex-differences in (a) rates and profiles of autism symptoms as well as in (b) the contribution of intellectual quotient (IQ) to autism symptom presentation in Down syndrome (DS). Participants were 40 males and 38 females with DS, aged 6 to 23 years. Autism symptoms were rated through the Autism Diagnostic Observation Schedule-Second Edition (ADOS-2).

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Early development marks a period of rapid learning facilitated by children's natural curiosity about the people around them. In children with typical development, these early social attentional preferences set the foundation for learning about and from the surrounding world of people. Much of this learning happens using joint attention, the ability to coordinate attention between people and objects of mutual interest.

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There is a growing body of evidence to suggest that individuals with Down syndrome (DS) are diagnosed with autism spectrum disorders (ASD) at a higher rate than individuals in the general population. Nonetheless, little is known regarding the unique presentation of ASD symptoms in DS. The current study aims to explore the prevalence and profiles of ASD symptoms in a sample of individuals with DS ( = 83), aged between 6 and 23 years.

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 Self-regulation is associated with many positive outcomes in children with and without autism, including increased mental health and academic achievement, and decreased problem behavior. Less is known regarding whether and how self-regulation and symptoms of mental health challenges (internalizing and externalizing problems) relate to social outcomes, such as friendship quality and loneliness. Parents and teachers of 106 children with autism aged 5-12 reported on children's self-regulation difficulties and externalizing and internalizing symptoms.

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Children with autism spectrum disorder sometimes have challenges with regulating their negative emotions. These difficulties can impact children's social outcomes and how well they respond to intervention. We know that caregivers of children with autism spectrum disorder can help their children regulate negative emotions in a process known as co-regulation, but not much is known about how child and caregiver strategy use impacts children's negativity in real time.

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Children with autism spectrum disorder (ASD) are at risk for disrupted peer interactions. This study contributes to our understanding of how multiple foundational elements of emotional competence are related to children's prosocial behaviors with peers. Children with ASD demonstrated significantly lower non-stereotypical affective perspective taking, had lower ratings of emotion regulation, and showed differences from their typical peers in the use of discrete coping strategies during peer interactions.

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