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Chapter 2: Problem 20

Sometimes, researchers will administer a(n) _____________ to participants in the control group to control for the effects that participant expectation might have on the experiment. a. dependent variable b. independent variable c. statistical analysis d. placebo

Short Answer

Expert verified
The answer is d. placebo.

Step by step solution

01

Understanding Experiment Variables

In any experiment, there are two primary types of variables. The independent variable is the one that is changed or controlled in a scientific experiment while the dependent variable is the variable being tested and measured. Neither of these, however, are administered to control expectations.
02

Ruling out Irrelevant Options

The answer cannot be statistical analysis either, as it is a method or component of data interpretation after the experiment has been conducted, not something administered to participants.
03

Identifying the Correct Response

By the process of elimination and understanding the context, it can be inferred that participants in the control group are often administered a placebo to balance the effects their expectations might have on an experiment. Placebos ensure that the control group believe that they too are receiving some form of treatment, this helps to control for expectation effects.

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