Question: A selection-maturation effect occurs when ______. Group of answer choices participants are randomly assigned to groups participants in nonequivalent groups mature at different rates participants

A selection-maturation effect occurs when ______. Group of answer choices participants are randomly assigned to groups participants in nonequivalent groups mature at different rates participants in nonequivalent groups get exposed to different historical events participants in nonequivalent groups are given multiple pretests and posttests

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