medium10 pts · first answer countsusability-testingtest-planningusability-metrics

Comparing designs with the same people

In a within-subjects test, the same 12 people try both designs. Why does this need fewer participants than a between-subjects test for the same precision?

A.Within-subject tests do not need any statistics at allB.Each person is their own comparison, removing personal differencesC.People always perform exactly the same on both designsD.It quietly doubles the number of participants in the study

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Comparing designs with the same people

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