Within-Groups Designs Reduce Error Due to Differences Between the Groups

question 25

Multiple Choice

Within-groups designs reduce error due to differences between the groups by using the same participants in each group.If differences are then observed between the groups, those differences are attributed to:

• A) extraneous variables.
• B) differences between participants.
• C) failure to control other important variables.
• D) the manipulation of the independent variable.

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