Differential attrition in comparison and experimental groups creates what type of internal invalidity?
A. selection bias
B. endogenous change
C. history effects
D. contamination
A. selection bias
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Most scholarly research has found that political action committees
a. virtually control policy outcomes through their activities. b. easily circumvent the policy preferences of political constituents. c. exert, at most, only a modest effect on a legislator’s decisions. d. are more influential on legislators than are party affiliation, ideology, or state and district interests.
German reunification took place in October 1990. This refers to the reunification of:
A. Germany and Poland. B. Germany and Austria. C. West Germany and Slovakia. D. East Germany and West Germany.
Senatorial courtesy refers to _____
a. the respectful manner with which state senators normally treat each other b. the tradition whereby individual state senators have an unofficial veto over any appointee of the governor who resides in their districts c. the legislative custom whereby the House usually accepts amendments added by the Senate to legislation that initially passed the House d. the tradition where a majority of state senators can reject a judicial nomination of the governor e. the tradition where a majority of state House members can reject a judicial nomination of the governor
Mexico's history of political stability can be characterized by which of the following statements?
A. Mexico is part of Latin America and can't be expected to be stable. B. Mexico has been much more stable than the rest of Latin America. C. Mexico has been among the least stable nations in Latin America. D. Mexico's political stability has been totally unpredictable.