Suppose you want to find out if using cell phones while driving a car affects the likelihood of having an accident. Driving ability as defined by the scores achieved on a test of driving ability would be the __________variable

One advantage of magnetic resonance imaging (MRI) over the computed tomography (CT) scan is that the MRI __________.

A. is not an invasive procedure B. provides better differentiation and clarity C. measures the metabolic processes of the brain D. does not require a claustrophobic cylinder-shaped machine

According to your textbook, the drugs that are classified as addictive sedative-hypnotics include which of the following?

a. alcohol b. barbiturates c. GHB d. all of these