If the relationships between measures of poverty, chaos, and psychological distress differed depending on whether families lived in rural or urban areas, this variable of population density (rural vs. urban) would be considered a
A. spurious variable.
B. mediating variable.
C. causal variable.
D. moderator variable.
D. moderator variable.
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Because of stringent legal restrictions on the amount of lead in paint and gasoline, lead poisoning is no longer a significant danger to children.
Answer the following statement true (T) or false (F)
One of the many advantages of correlational research is that it
a. allows researchers to study variables that cannot be examined using an experiment. b. allows the researcher to test for and determine the nature of causal relationships. c. exhibits high internal validity. d. tends to be statistically significant.
These tests are used to obtain further information about a specific skill or area of academic achievement.
A) Diagnostic test B) Achievement test C) Aptitude test D) Screening test
The criterion of success in college is most often students’ ______.
A. classroom test scores B. professors' ratings C. grade point average D. community service activities