Why Do Researchers Change Only One Variable at a Time

question 116

Multiple Choice

Why do researchers change only one variable at a time in single-case experiments?

• A) There are not enough participants to change multiple variables at once.
• B) There is increased external validity when only one variable is changed at a time.
• C) Changing multiple variables at once creates confounds in the experiment.
• D) The statistical techniques required to analyze the data are very complex when more than one variable is changed at a time.

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Definitions:

Indirect Approach

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Main Idea

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Visual Medium

A form of communication that conveys information through visual representations, such as photographs, diagrams, or videos.

Digital Channel

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