Which kind of research would best enable you to predict academic success on the basis of performance on standard intelligence tests?

If you look at a pinpoint of light in a dark room, the light appears to move even though it is in fact stationary. This illusion of movement is called the ____ effect

a. autokinetic b. omega c. sleeper d. visual pique

In an experimental design _____, whereas in a correlational design _____

a. there is only one variable (the independent variable); there are two variables (X and Y) b. there are two X variables; there are an X and a Y variable c. researchers assign each person an X score and then measure the score on the Y variable; researchers measure scores on variables that a participant has already experienced d. researchers measure scores on variables that a participant has already experienced; researchers assign each person an X score and then measure the score on the Y variable