Researchers are studying the effects of nicotine on driving.The participants are divided into two groups.One group is provided with nicotine cigarettes and the other with fake cigarettes that taste and smell like real cigarettes but do not contain nicotine.The fake cigarettes are an example of a(n)

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The fake cigarettes are an example of a placebo, as they are a substance that is given to the control group with the intention of creating a psychological effect similar to the active treatment given to the experimental group (in this case, nicotine cigarettes). The dependent variable is the variable being measured (in this case, the effects of nicotine on driving), the experimental group is the group receiving the active treatment, and random assignment refers to the process of randomly assigning participants to either the control or experimental group.

Researchers Are Studying the Effects of Nicotine on Driving