In research that investigates differences in behavior or thought across cultures, we cannot identify causes of differences because
a. there are many uncontrolled variables that may be the cause of differences.
b. studies across cultures typically involve manipulated variables.
c. it is not possible to use subject or participant variables in such studies.
d. levels of internal and external validity tend to vary across studies.
A
Political Science
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The Gettysburg Address best reflects the president's role of __________
A) administrative clerk B) political partisan C) policy advocate D) national historian
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