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

question 13

Multiple Choice

The difference between before-after and controlled before-after experimental design is that the _____.

• A) controlled before-after design is meant specifically for primary research
• B) before-after design is meant specifically for primary research
• C) controlled before-after design involves not one group, but two
• D) before-after design eliminates the possibility of other variables influencing the results
• E) before-after design measures the variables to be tested before the experiment begins

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