The network news is reporting that a prominent U.S. Senate race is very close, with the polls showing that the incumbent leads the challenger by just two percentage points. This is an example of what type of news coverage?

Being able to eliminate many extraneous variables is a major advantage of

A) naturalistic research. B) case-study research. C) both naturalistic and case-study research. D) experimental research.

Have you ever noticed that two extremely attractive people can have an average-looking or unattractive child? This is an example of __________

a. maturation b. regression to the mean c. history d. placebo