In their study of the heritability of autistic traits among Dutch teens, Rosa Hoekstra and her colleagues were careful to choose participants from a variety of backgrounds and circumstances. Why is careful sampling especially important to studies of heritability?
A. The effects of genetics are most obvious in populations that exclude extreme environmental conditions, such as affluent or very poor families.
B. Environmental influences are magnified in extreme environmental conditions, such as among affluent or very poor families.
C. Extremes of environmental conditions, such as affluent or very poor families, tend to magnify the influence of genetics.
D. These precautions are really not relevant, because heritability cannot be assessed experimentally.
Answer: C
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Which of the following statements about the treatment of eating disorders is most accurate?
A. There are very few options available for the treatment of eating disorders. B. Family support and the patient's commitment to change are important to lasting recovery. C. There are virtually no situations in which hospitalization is necessary to treat eating disorders. D. Family involvement in treatment tends to undercut the chances of lasting recovery in patients.
Most young mammals stop nursing, at least partly, due to the loss of what ability?
a. metabolizing the sugar in milk b. sucking sufficiently c. the Babinski reflex d. digesting the fat in milk
Regarding identity formation and ethnic minorities, which of the following statements is FALSE?
a. In the past, ethnic adolescents have often faced degrading stereotypes concerning their intelligence, sexuality, social status, and manners. b. Facing stereotypes concerning one's intelligence, sexuality, social status, or manners can result in lowered self-esteem and confusion about roles, values, and personal identity. c. As ethnic minorities in American continue to grow in prominence, minority adolescents will be less likely to feel rejected or excluded because of their ethnic heritage. d. Teens who take pride in their ethnic heritage tend to have a weaker sense of personal identity and a poorer self-image.
Cultural diversity refers most specifically to differences in:
a. physical appearance. b. language and norms for behavior. c. nationality or religion. d. all of the above