A Solomon four-group design differs from a classic experimental design in that the former
A) does not include a pre-test.
B) adds an experimental and control group that does not have a pre-test.
C) can be used to sort out the effects of selection bias.
D) can be used to differentiate the effects of placebos from other variables.
E) none of these

Question

Quizplus · Accepted Answer

The Solomon four-group design includes both groups that receive a pre-test and groups that do not, allowing researchers to assess the impact of the pre-test on the experiment's outcomes. This design adds an experimental and a control group without a pre-test to the traditional pre-test/post-test control group design, enabling the examination of pre-test sensitization effects.

A Solomon Four-Group Design Differs from a Classic Experimental Design