After they had failed in the writing exam that was required for all students before graduation, 15 students were placed in a class in which they received additional tutoring. After completing this class, all 15 students retook the exam and earned higher scores. Their success was held up as an example that the class curriculum really works. What source of internal invalidity has not been considered?
A. history effect
B. noncomparable groups
C. contamination
D. regression
D. regression
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From a governor's view, the least threatening of elected officials is the a. attorney general
b. insurance commissioner. c. secretary of state. d. lieutenant governor.
Explain different approaches politicians take to make the news. Why do politicians and the news media tend to have an adversarial relationship?
What will be an ideal response?
Why does the United States have a two-party model?
a. The framers wanted competition between political parties. b. It developed in the struggle between Federalists and Democratic-Republicans. c. It was a compromise between a unitary system's efficiency and a multiparty model's diversity. d. It developed in the struggle between slave owners and abolitionists.
Why are there currently 435 members in the House of Representatives?
a. The Constitution requires a specific ratio of representatives to constituents. b. The Constitution stipulates exactly 435 members. c. The number has grown each decade, according to census data. d. The number is fixed by statute.