When using a nonequivalent-groups design, the researcher will handle subject assignment to groups by . a. Random assignment to experimental and control groups b. Allowing subjects to pick which group they want to be in c. Matching subjects in the experimental group to those in the comparison group d. None of these

c. Matching subjects in the experimental group to those in the comparison group                  

Explanation:

Nonequivalent groups design: In psychological research, the term "nonequivalent groups design" is described as one of the "quasi-experimental research designs" whereby a dependent variable is being measured by following a specific treatment in a single group. It is being used to estimate or analyze the "relative effects" of two or more than two treatment conditions i.e, only two different treatments are being compared.

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