As Robert G. McCloskey noted, "The fact that the Constitution is supreme does not settle the question of who decides what the Constitution means."

When using the nonequivalent comparison group design, you can increase internal validity by

a. allowing students to self select into groups b. allowing parents to decide which group their children will be in c. not allowing students to self select into groups d. not pre-testing participants

The United States Census is an example of a ______________________.

a. Sample b. Population c. Random sample d. Universe