Quasi-experimental studies attempt to minimize threats to validity but nonexperimental studies make little or no attempt.

Question

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Quasi-experimental studies attempt to control for extraneous variables, use comparison groups, and randomize to some extent in order to reduce threats to validity. Nonexperimental studies, on the other hand, do not typically manipulate variables or include comparison groups, and thus make less effort to minimize threats to validity.

Quasi-Experimental Studies Attempt to Minimize Threats to Validity but Nonexperimental