A longitudinal study of ethnic group differences in IQ showed that ethnic disparities between African Americans and Caucasians
a. reveal a social class effect.
b. are illusory; they do not exist.
c. are wider and stronger than were previously believed.
d. largely reflect African American mothers' lack of education.
A
Psychology
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A criterion-referenced test compares a person's performance level with
A. the performance of others with similar characteristics B. their own previous performance levels C. an arbitrarily determined criterion D. established norms
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