Which of the following is always used in differential research?
A) Random assignment of participants to groups
B) The Pearson r or the Spearman r
C) Random selection of participants to ensure a representative sample
D) Groups differentiated on the basis of preexisting variables
Answer: D
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Which group is primarily responsible for gathering and analyzing information about the political and military activities of other nations?
A) The Central Intelligence Agency B) The National Security Agency C) Homeland Security D) The National Reconnaissance Office E) The Joint Chiefs of Staff
What is one way in which the power of the UN Security Council is limited?
A. Its decisions depend entirely on the interests of its member states. B. The UN General Assembly can override its decisions. C. Member states adhere to Security Council resolutions. D. Eight of the ten nonpermanent members can override a permanent member's veto.