In a nonequivalent control-group design, if the experimental and control groups are NOT equivalent at pretest and both groups change in the same manner (e.g., both groups increase an equal amount on the measure), you might conclude that
A) the manipulation of the independent variable affected both groups.
B) the effect was due to selection.
C) a maturation process or historical event common to the two groups caused the change in scores.
D) Both A and B
Answer: C
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Shays's Rebellion came about because
a. the federal government was imposing unfair taxes on farmers. b. the tariffs on trade between states were becoming too steep. c. laborers felt they were not being paid well enough. d. Massachusetts was taxing its citizens too heavily. e. Parliament imposed new taxes without the colonists' consent.
The major emitters of greenhouse gases today are __________.
A. industrialized countries B. countries in the global South C. countries of the former Soviet Union D. Eastern European countries
In the wake of the 2017 Las Vegas shooting, the National Rifle Association
A. expressed a desire for greater regulation of assault rifles. B. suggested it might consider legislation to regulate bump stocks but took no actual steps toward doing so. C. proposed a ban on all automatic and semiautomatic assault rifles. D. announced that it would oppose any measure of any kind that might increase regulation of firearms. E. lobbied for legislative regulation of bump stocks.
Which of the following proposals to reform Social Security financing would lead to increased revenues to the program?
A. increasing the retirement age B. reducing or delaying cost-of-living adjustments C. lifting the cap on the amount of wages subject to the Social Security tax D. privatization of investments