According to Holland, people who use art to express themselves are ___________, and they often prefer the world of art to interactions with people. These people are best suited to occupations involving art

level of education is negatively correlated with risk of Alzheimer's disease

a. true b. false

Some people believe that money can buy happiness. Dr. Goodwin wants to determine whether paying people plays a role in their happiness. The level of money given to a subject would be considered to be the

a. experimental variable. b. confounding variable. c. dependent variable. d. independent variable. e. control variable.