You have been asked to evaluate the effectiveness of a new anti-smoking campaign in a local high school. You are able to collect pretest information on smoking rates before the campaign begins
You know that the entire school will be required to participate in the campaign and so random assignment is impossible.You are also aware that a reduction in smoking after the campaign could be caused by any number of other confounding variables.What can you do in this situation to enhance your ability to determine if the campaign was effective in reducing smoking?
a. test the students at the end of the campaign and then again a year later – if reductions in smoking remain at that time then you can be confident that the campaign was effective
b. conduct extensive postexperimental interviews to determine the cause of any change in smoking rates
c. identify a similar school that is not using the campaign and include them in a nonequivalent comparison group design
d. interview parents of the students
C
You might also like to view...
In deciding how many people to include in a probability sample of a large population, which of the following factors does NOT need to be taken into consideration?
Germany is called a ____________ because of the important role political parties play in shaping state policy
a. party democracy b. party oligarchy c. party federation d. party republic e. party commonwealth
The evolution of the American presidency ______.
A. was expected by the Framers as the responsibilities facing the government increased B. has occurred through delegation on domestic policies, but the expansion of responsibility on foreign affairs reflects the limited and general language on foreign affairs in the Constitution C. reflects the strong command authority the Framers thought was needed to solve collective action problems D. would meet the hopes of the Framers because their ideal president was someone who could solve collective action problems by minimizing transaction costs
If the U.S. government gave a per-head dollar amount to ranchers to raise organic beef, this would be a(n)
a. income redistribution. b. subsidy. c. progressive tax. d. regressive tax. e. tax exemption.