The president is the main authority in foreign affairs

What is the primary benefit of matching?

a. it eliminates the influence of virtually all known extraneous variables b. it eliminates experimenter expectancy and participant effects c. it overrides the need for random assignment d. the influence of the variables on which participants are matched is spread evenly across groups

A representative who is performing the role of a trustee is

A) representing only the needs of his or her constituents. B) supporting all of the president's legislative programs. C) supporting his or her political party. D) acting on conscience or representing the broad interests of the entire society. E) representing other members of Congress.