In experimental psychology, the proportion of the top third of the class that correctly answered the last question of the final was .93 while .89 of the bottom third of the class answered correctly. The professor should decide not to include this question in the next final because the discrimination index indicates
a. negative discrimination.
b. chance level performance.
c. that students were incorrectly prepared.
d. that the item does not discriminate well.
d
Psychology
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What is the most widely used illicit drug in the United States?
a) LSD b) heroin c) cocaine d) marijuana
Psychology
The book The Bell Curve argues that the average 15-point difference between Caucasian Americans' and African Americans' IQ is primarily due to
a) high rates of poverty among African Americans. b) the environment. c) heredity. d) lower employment among African Americans.
Psychology