America’s NSA listened in on phone conversations of German chancellor _____________.
Fill in the blank(s) with the appropriate word(s).
Angela Merkel
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International agreements between the president and a foreign head of state that do not require legislative approval are known as
A. treaties. B. executive agreements. C. contracts. D. memoranda of understanding. E. executive orders.
The doctrine of humanitarian intervention is most consistent with
a. liberalism. b. feminism. c. realism. d. Marxism.
Proliferation optimists base their case on the assumption that
a. nuclear powers will eventually agree to eliminate their weapons. b. nuclear weapons would be no more destructive than modern conventional weapons. c. very few nations are likely to acquire nuclear weapons. d. nuclear weapons substantially raise the potential costs of war.
In an experiment on the effects of massed versus distributed practice on learning, introductory psychology students who volunteered for extra credit were randomly assigned to one of two groups Both groups were to practice a perceptual-motor task five times for 10 minutes each. Group 1 did all five 10-minute practice sessions in one evening while group 2 was asked to do one 10-minute practice session a night for five consecutive nights. All of the participants in Group 1 completed the experiment, but only 30% of the participants in Group 2 showed up for all five nights. This study is an example of confounding by
a. differential attrition. b. selection bias. c. history. d. demand characteristics.