Recent content by a_stevens

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    Valid use of repeated measures ANCOVA?

    No, you use the regular RM ANOVA to assess the within-subjects effect (leave the continuous predictor out of the analysis), and you use the RM ANCOVA to assess the between-subjects effect and the within-between interaction (both of which involve the use of the continuous predictor, i.e., the...
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    Valid use of repeated measures ANCOVA?

    From what I can tell, it seems to be a valid analysis. The key point is that you analyze your within-subjects main effect with a repeated measures ANOVA, and any effects involving your continuous predictor using a repeated measures ANCOVA (i.e., between-subjects effects, as well as...
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    Valid use of repeated measures ANCOVA?

    I am running a repeated measures study with four time points. A single group of participants receive the same questionnaire at each time point, which is assessing variable X. I am determining how variable X changes over time. I plan to analyze this in SPSS using a repeated measures ANOVA (with...