ANOVA with Between- and Within- Subject Variables (1 of 3)

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It is common for designs to have a combination of between- and within-subject variables. In this section designs with one between- and one within-subject variable are discussed.

Consider an experiment in which four 8-year-old and four and 12-year-old subjects are given five trials on a motor learning task. There are two variables: age and trials. Age is a between-subject variable since each subject is in either one age group or the other. Trials is a within-subject variable since each subject performs on all five trials.
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