Which statement about changes in adolescence is true?
A. Girls' legs become longer than boys' in relation to the rest of the body.
B. Unlike girls, boys start to add fat on their arms, legs, and trunk in adolescence.
C. Although both sexes gain in muscle, the increase is 150 percent greater in boys.
D. Boys and girls experience an almost identical gain in muscle.
Answer: C
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Nathan does not want to vaccinate his infant son as he has heard from friends that some vaccinations, and the mercury preservative used in some vaccines, can cause autism. As a child development expert, you tell him that
a. this has been substantiated in many research studies. b. there is no scientific evidence for this view. c. only certain vaccines cause autism. d. vaccinations do not cause autism, but do worsen the symptoms in autistic children.
Jay participates in an experiment where he and three other participants are asked to judge the quality of a series of sculptures. Jay is least likely to exhibit informational influence if
a. each sculpture is shown for only a few seconds. b. he is motivated to be very accurate in his judgments. c. there are no objective criteria by which to make such judgments. d. there is a clear and unambiguous response for each sculpture.
According to Robert Sternberg, different forms of love arise from different combinations of three basic components. Which of the following is NOT one of those components?
a. intimacy b. passion c. commitment d. affiliation
A random sample is selected from the population by _____
a. chance c. using a pretest b. guesswork d. all of these