Many recessive disorders are associated with ethnicity. One such disorder which occurs in
1/650 African Americans in the United States is
a. PKU.
b. Tay-Sachs disease.
c. Sickle-cell disease.
d. Cystic fibrosis.
c. Sickle-cell disease.
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Luis is taking his girlfriend, Rosa, to a resort town neither one of them has visited. Luis wants to make a good impression on Rosa, so he spends the week before the trip reading about fun places to go while they are there. He also memorizes a map of the small resort town, so he can lead her around without bothering to ask for directions. When they arrive, they first visit a botanical garden. When Rosa says, "Where to next?" Luis conjures a mental image of the map and says, "art museum." Let's assume the garden was six inches due south on the map and that it took Luis four seconds to scan the map image between the two. After they visit the museum, Luis takes Rosa to a fancy restaurant. On the map, the restaurant was three inches northwest of the museum, so it is most likely that when Luis
scanned the image to find the restaurant, the scan took approximately ___________ seconds. A. two B. three C. four D. six
Which of the following is most likely to reduce cognitive decline with aging?
A. Playing a musical instrument B. Sleeping for more than eight hours every day C. Exercising D. Reading in early childhood
The medications such as Ritalin and Cylert that are generally used to treat attention deficit / hyperactivity disorder have proven particularly helpful to most patients in:
A. temporarily reducing hyperactivity and impulsivity and / or improving concentration B. reducing hyperactivity and impulsivity and / or improving concentration with gains maintained after the medication is discontinued C. temporarily increasing academic performance and socialization D. increasing academic performance and socialization with gains maintained even after the medication is discontinued
Which of the following is not true about severe and profound mental retardation?
a. Their overall prevalence rates are similar around the world. b. They are about as frequent in boys and girls. c. They are associated with shorter life expectancies. d. They are biologically caused and not significantly affected by social factors. e. All of the above is true of individuals with profound and severe mental retardation.