within-group designs refer to designs in which the same group of participants is compared at different points in time, as in before and after a treatment is administered

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Between-Subjects Design at psychology-glossary.com■■■■
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Mixed Design at psychology-glossary.com■■■■
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Reversal Design at psychology-glossary.com■■■■
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Within-subjects design at psychology-glossary.com■■■■
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