Which research designs could be classified as experimental? (Select all that apply.)
a. Solomon four-group design
b. After-only design
c. Nonequivalent control group design
d. After-only nonequivalent control group design
e. One-group pretest-posttest design
f. True experimental pretest-posttest control group design
g. Time series design
ANS: A, B, F
Feedback
Correct The Solomon four-group design is an experimental design.
The after-only design is an experimental design.
A true experimental pretest-posttest control group design is an experimental design.
Incorrect A nonequivalent control group design is a quasi-experimental design.
An after-only nonequivalent control group design is a quasi-experimental design.
A one-group pretest-posttest design is a quasi-experimental design.
A time series design is a quasi-experimental design.
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