Part 2. A drug company is advertising a new drug that helps people recover from

Question

Part 2. A drug company is advertising a new drug that helps people recover from jet lag faster. You are skeptical, so you conduct an experiment to test their claim. In your experiment, 100 people are flown from San Francisco to Tokyo. During the flight, half the participants are randomly given the drug company's new drug. The other half of the participants are given a placebo (i.e., sugar pill) during the flight. Six hours after they land, all participants are asked to rate how sleepy and disoriented they feel on a scale from 1 to 10. What is the dependent variable (DV)? What operational definition was used in this experiment?

Explanation / Answer

The above experiment is conducted to understand the effect of independent variable on the dependent variable. Independent variable (a new drug and sugar pill [placebo]) is manipulated by the experimenter in order to see its effects on the dependent variable. The dependent variable in the above experiment is sleepiness. The operational definition used in the experiment is, using a drug to see its effects on how it helps people recover from jet lag faster.

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