In his research, Steele found that when African-American college students were told that a task to be performed was a laboratory problem-solving task and not a test of academic ability, their performance was
a. significantly better than the European-American college students.
b. slightly better than the European-American college students.
c. the same as the European-American college students.
d. worse than the European-American college students.
C
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Research conducted in the 1980s concluded that infants can discriminate between all of the following basic facial expressions except which of the following?
A. disgust B. happiness C. surprise D. sadness
A researcher goes to great lengths to ensure that the proportion of males and females in his study matches the proportion of males and females nationally. He is selecting a ______ sample
a. random b. controlled c. biased d. representative
What is the measure of the ratio of weight to height called?
a. growth index b. body fat index c. body mass index d. W-H index
The leading causes of death in middle age are __________ and __________
A) motor vehicle collisions; cancer B) falls; motor vehicle collisions C) cancer; cardiovascular disease D) falls; cardiovascular disease