Why has the difference in IQ between African Americans and White Americans narrowed in recent years?
A. revision of IQ test to reduce cultural bias
B. an increase in the number of African American psychologists
C. changes in environmental factors
D. changes in genetic factors
Answer: C
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Loss of subjects during the course of a research project usually introduces bias because
a. the resulting sample is too small b. subjects are not lost on a random basis c. descriptive statistics cannot be used on the resulting data d. inferential statistics cannot be used on the resulting data
The goal of the Human Genome Project is to
a. identify all of the human genes. b. verify Darwin's theory of natural selection. c. show research support for the major events in human evolution. d. build human-like robots or cyborgs.
The major problem facing Medicare involves:
A. the lack of skilled nursing facilities. B. a refusal by the government to fund via a payroll tax. C. rising healthcare costs. D. the increasing age of retirement.
For U.S. families with just one preschooler, child care consumes, on average, _____ percent of the typical earnings of a single mother and _____ percent of the earnings of a two-parent family
A) 10; 7 B) 29; 10 C) 33; 19 D) 45; 15