Imagine That a Group of Researchers Conducted a Single-Blind Study

question 142

Multiple Choice

Imagine that a group of researchers conducted a single-blind study designed to test the effectiveness of subliminal-message weight-loss tapes. Suppose the researchers found that everyone lost weight during the study, even those who were given tapes without any subliminal messages. What could we conclude from the results?

• A)The independent and dependent variables in the study are negatively correlated.
• B)There is evidence that the study contained confounding variables.
• C)There is evidence of a placebo effect.
• D)Subliminal tapes are effective in promoting weight loss.