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Looking at the concordance rates for autism found in twin studies and family studies, Newschaffer and colleagues (2007) believe that autism is primarily the result of ____.

Of the following, which group has the lowest prevalence of asthma?

Based on the fact that stimulant medications have been used effectively to treat ADHD, it is believed that the disorder may be caused by ____.

Kendall, a popular first grader, is continuously in the principal’s office. Their teacher complains that they do not listen to instructions and fail finish his schoolwork, that they fidget and squirm in their seat, often leave their seat without permission, and cannot seem to wait their turn during class activities. Whenever the principal calls Kendall’s mother, she seems baffled by his behavior because Kendall does not have any problems at home or other settings. What diagnosis is most appropriate?

Ever since Steve was a toddler he was irritable and difficult to please. He often threw long temper tantrums in front of his parents and other children. As a child, Steve continues to have angry episodes and outbursts, which are not premeditated and involve physical injury. Steve most likely will be diagnosed with ____.

Dr. Travis says, “People with intellectual disabilities have an IQ below 90 and must be diagnosed before age 18. Prevalence figures for the United States are 2–3 percent. People with intellectual disabilities have deficiencies in adaptive behavior that are lower than expected based on age or cultural background.” What portion of this statement is most accurate?

Describe psychophysiological disorders and some of the factors that may lead to their development. How are some people able to avoid succumbing to the ill effects of these risk factors?

During the experience of an overwhelming and traumatic stimulus, ____.

In approaching the biological etiology of autism, there are a variety of biological perspectives. All of these approaches have confirmed which of the following in the development of autism spectrum disorder?

Candy is a 2-year-old with a moderate intellectual disability. She appears to have a single crease across the palm of her hand, slanted eyes, and a harsh voice. What diagnosis would Candy most likely be given?