The experiment compared group-Individual (GI) and group (G) counseling groups with a control (C) group. The groups were equal In ability and Initial grade point averages. Results Indicate that those S's In the G groups had an observably larger GPA ten weeks following the completion of the experiment than the S's In the C group. It was suggested that a period of Incubation is necessary before the Insights gained during group counseling are translated Into action.
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Joseph Mezzano (1968) studied this question.
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