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Cross-Sequential Study Associated With Autism Spectrum Disorders

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Methods Research Design This study was a cross-sequential study that used a between-subjects design. The independent variable in this study was defined as the possession of an older sibling who is either diagnosed with autism spectrum disorder or typically-developing. The dependent variable measured was the expressive and receptive language scores of each child. Participants A total of 30 participants were recruited in the fall of 2017, ranging from 14 months to 10 years of age. Approximately 60 percent of the sample (N=18) were male, while 40 percent (N=12) were female. Participants were recruited from three local school systems, Blount County Schools, Maryville City Schools, and Knox County Schools and respective daycares. Interested …show more content…

The following language scales, dependent on each child’s individual age, were used over the course of the study: Bayley Scales of Infant Development – 2nd edition (BSID-II) This language scale calculated language developmental age score at 14 months. The developmental language age scores were calculated based upon receptive and expressive language abilities. All language scores had a mean score of 100 with a standard deviation of 15. Reynell Developmental Language Scales (RDLS) This language scale calculated language developmental scores at 24 months. Developmental language scores were calculated based upon verbal comprehension, receptive, and expressive abilities. All language scores had a mean score of 100 with a standard deviation of 15. Clinical Evaluation of Language Fundamentals-Preschool (CELF-Preschool) This language score is designed to evaluate language abilities in children between the ages of 3 to 6 years. Developmental language scores were calculated based upon receptive and expressive language abilities. All language scores had a mean score of 100 with a standard deviation of 15. Clinical Evaluation of Language Evaluations – 3rd edition (CELF-III) This standardized test assessed the language scores of children between the ages of 6 to 21 years. Developmental language scores were developed based upon receptive and expressive language abilities. All language

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