# Tagged Questions

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### Partial $\eta^2$ for repeated measures ANOVA (with R's car package) [closed]

I have a 2-way repeated measures design (3 x 2), and I'd like to get figure out how to calculate effect sizes (partial eta squared). I have a matrix with data in it (called a) like so (repeated ...
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### Pretest-posttest plus control design

I am evaluating the effect of an intervention (treatment: a lecture) on the ability to spot behavioral clues of emotions using visual stimuli using pretest-posttest plus control group experimental ...
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### Effect size in contrast analysis

I'm running 2-way repeated measures ANOVA (3 and 5 levels) with planned contrasts afterwards. I'm interested in comparing 1)levels of the first factor among themselves (e.g. A1B with A2B, A2B with ...
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### One-way repeated measures ANOVA with G*Power

I have made an experiment with 28 subjects. All made the experiments under 3 different conditions (A, B and C). So I have a table like this: ...
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### How to calculate Cohen's d effect size intervals for a within-subject design?

I have looked at different web tools for calculating confidence intervals for effect size like Cohen's d for within-subject design. My experience from this survey tells me that there are different ...
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### Effect size measure for doubly-repeated measures design?

Update: I haven't gotten any answers, so I am simplifying my question. Say I measure test scores of $100$ people in one of two conditions. Each test has $10$ items. On each item, each person can ...
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### Recommended effect size measure for repeated measures t-tests and repeated measures contrasts on experimental data

Context This came up recently in a consulting context. A researcher was performing repeated measures t-tests based on experimental data. Some of the analyses involved comparing one condition with ...