The long-term effects of preschool compensatory education programs have been found to ___ when no booster programs following these programs were used
a. strongly persist c. gradually be lost
b. essentially be insignificant d. immediately be lost
C
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Ruling out alternative theoretical explanations of results is the concern of ______ validity
a. internal b. construct c. external d. statistical
Once teens are addicted to drugs or alcohol, why is it so hard to quit?
a. Nothing else gives them pleasure as it once did b. The teen feels popular and wants to continue with this social status c. Drugs and alcohol are easily available d. Teens lack the parental supervision need to avoid these drugs
In what place does the United States rank among countries of the world in terms of life expectancy?
A. First B. In the top ten C. Thirty-sixth D. Next to last
Baral et al. (2012 ) found that worldwide rates of HIV infection in prostitutes was
A) disproportionately low. B) disproportionately high. C) the same as the general population. D) lower in areas where prostitution was illegal.