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Growth and Decline in Language and Phonological Memory over Two Years among Adolescents with Down Syndrome
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Conners, Frances A.; Tungate, Andrew S.; Abbeduto, Leonard; Merrill, Edward C.; Faught, Gayle G. – American Journal on Intellectual and Developmental Disabilities, 2018
Forty-two adolescents with Down syndrome (DS) ages 10 to 21 years completed a battery of language and phonological memory measures twice, 2 years apart. Individual differences were highly stable across two years. Receptive vocabulary scores improved, there was no change in receptive or expressive grammar scores, and nonword repetition scores…
Descriptors: Adolescents, Down Syndrome, Language Acquisition, Language Skill Attrition
Inference from Facial Expressions among Adolescents and Young Adults with Down Syndrome
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Goldman, Karen J.; Shulman, Cory; Burack, Jacob A. – American Journal on Intellectual and Developmental Disabilities, 2018
The focus of this study was the ability of adolescents and young adults with Down syndrome to infer meaning from facial expressions in the absence of emotion labels and use this inference in order to adjust their behavior. Participants with Down syndrome (N = 19, mean nonverbal mental age of 5.8 years) and 4- to 7-year-old typically developing…
Descriptors: Adolescents, Young Adults, Down Syndrome, Nonverbal Communication
Symptoms of Attention-Deficit/Hyperactivity Disorder in Down Syndrome: Effects of the Dopamine Receptor D4 Gene
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Mason, Gina Marie; Spanó, Goffredina; Edgin, Jamie – American Journal on Intellectual and Developmental Disabilities, 2015
This study examined individual differences in ADHD symptoms and executive function (EF) in children with Down syndrome (DS) in relation to the dopamine receptor D4 (DRD4) gene, a gene often linked to ADHD in people without DS. Participants included 68 individuals with DS (7-21 years), assessed through laboratory tasks, caregiver reports, and…
Descriptors: Symptoms (Individual Disorders), Attention Deficit Hyperactivity Disorder, Individual Differences, Genetics
Longitudinal Assessment of Intellectual Abilities of Children with Williams Syndrome: Multilevel Modeling of Performance on the Kaufman Brief Intelligence Test--Second Edition
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Mervis, Carolyn B.; Kistler, Doris J.; John, Angela E.; Morris, Colleen A. – American Journal on Intellectual and Developmental Disabilities, 2012
Multilevel modeling was used to address the longitudinal stability of standard scores (SSs) measuring intellectual ability for children with Williams syndrome (WS). Participants were 40 children with genetically confirmed WS who completed the Kaufman Brief Intelligence Test--Second Edition (KBIT-2; A. S. Kaufman & N. L. Kaufman, 2004) 4-7…
Descriptors: Congenital Impairments, Genetic Disorders, Mental Retardation, Intelligence Quotient
Perceptions of Body Image by Persons with Prader-Willi Syndrome and Their Parents
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Napolitano, Deborah A.; Zarcone, Jennifer; Nielsen, Sarah; Wang, Hongyue; Caliendo, Jillian Maynard – American Journal on Intellectual and Developmental Disabilities, 2010
Prader-Willi syndrome is a genetic disorder characterized by obesity. The Figure Rating Scale (Stunkard, Sorensen, & Schulsinger, 1983) was completed by 43 individuals with this syndrome to determine their level of dissatisfaction with their body. Their parents also completed this scale regarding their child to determine whether they were…
Descriptors: Genetic Disorders, Obesity, Self Concept, Mental Retardation