It is important in a matched-subjects design for researchers to assign each matched set of participants randomly to the conditions primarily because

A) all of the critical variables should have been identified by consulting published studies.
B) of the requirements to keep researchers blind as to condition.
C) of the requirements to keep participants blind as to condition.
D) random assignment within sets can control for unidentified confounding variables.


Answer: D

Political Science

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Answer the following statement true (T) or false (F)

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List two arguments that critics make against the proportional representation system.

What will be an ideal response?

Political Science