In the elitist model of agenda setting, much of this process takes place hidden from the public eye

The War Powers Resolution authorizes the President to commit military forces to combat in all of the following circumstances EXCEPT

a. when Congress has declared war. b. when the nation's interests are threatened. c. when an attack on the United States or any of its armed forces has occurred. d. when Congress has authorized the action.

If human participants cannot be selected randomly,

a. then select with a conscious bias and keep that in mind when interpreting data. b. then use non-human participants so you can get them at your convenience. c. it is imperative to match participants to each other (individual matching). d. it becomes more important to report exactly how participants were selected and assigned.