The extraneous variable in a study that affects the primary variables and makes it appear as if the two are causing each other is called the __________ variable
a. confounding
b. independent
c. dependent
d. random
Answer: A: confounding
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Meredith is a doctor whose patients are participants in a research study testing a new cholesterol medication. Neither Meredith nor her patients knows whether the patients are receiving the new experimental drug or a placebo. This is an example of:
a. a confounding variable b. random assignment c. a double-blind experiment d. a single-blind experiment
One of the simplest and most effective ways to enhance one's health is to __________
a) stop smoking cigarettes. b) lose at least 10% of your body weight. c) start at least moderate exercise. d) use mild anti-anxiety medication on a daily basis.
Most episodes of sleepwalking and sleep talking occur during ________ sleep
a. Stage 2 b. REM c. Stage 4 d. Stage 3
A decrease in the effectiveness of a drug that is administered repeatedly is:
a. Tolerance b. A predictor of addiction c. Addictiveness d. Withdrawal