As the proportion of people who get an item on a test correct increases, the measure of item difficulty
a. decreases.
b. remains the same.
c. increases.
d. approaches chance.
c
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Which statement best describes the relationship between schizophrenia and socioeconomic level? a. There is no consistent relationship between schizophrenia and socioeconomic level
b. Schizophrenia is most prevalent at lower socioeconomic levels. c. Severe forms of the disorder are most common at upper socioeconomic levels; milder forms are more common at the lower socioeconomic levels. d. Schizophrenia is most common at upper socioeconomic levels.
Substance abuse often peaks ______.
A. in the late teens B. in the 20s C. in the early 30s D. in the mid to late 30s
Which form of play makes use of imaginary and symbolic objects and social roles?
a. Parallel c. Cooperative b. Social pretend d. Rough-and-tumble
Because the limbic system may be involved in processing odors, many smells are readily associated with
a) tastes. b) certain sounds. c) odor memories. d) visual afterimages.