Dr. Smith noticed that during the summer, an ice-cream stand extended their hours. He also noticed that temperatures were higher and that people consumed more ice cream. The variable of hours the ice-cream stand was open is an example of
a. the experimental method. c. cause and effect.
b. the third-variable problem. d. the placebo effect.
Question 2
The major disadvantage of correlational research is that it
a. is costly to carry out.
b. is artificial, and it is hard to apply the results to real-life settings.
c. is time-consuming and impractical.
d. cannot demonstrate what caused what effect.
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