If you decide to have students compute the dependent

In discussing either one of these distinctions, you may find it helpful to use the "bag of tricks" example presented in

Zerbolio, D. J. (1989). A "bag of tricks" for teaching about sampling distributions.

Teaching of Psychology, 16, 207-209.

If you decide to discuss within-subjects analysis of variance, consider

- Explaining how to decipher a within-subjects ANOVA table, and
- Showing students how to code data for a within-subjects design.

If you want to go into additional depth in analyzing within-subjects designs, you could discuss

1. Tukey's test of additivity, for violations of assumption of independence;2. nonparametric alternatives to ANOVA;

3. planned comparisons;

4. using MANOVA to analyze within subjects designs. The following reference is useful:

O'Brien, R. G. & Kaiser, M. K. (1985). MANOVA method for analyzing repeated measures

designs: An extensive primer.Psychological Bulletin,

97, 316-333.

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