The Difference Between Before-After and Controlled Before-After Experimental Design Is

question 61

Multiple Choice

The difference between before-after and controlled before-after experimental design is that:

• A) the controlled before-after design is meant specifically for primary research.
• B) the before-after design is meant specifically for primary research.
• C) the controlled before-after design involves not one group, but two.
• D) the first step involved in the controlled before-after design is the selection of an experimental group.
• E) the before-after design measures the variables to be tested before the experiment begins.

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