anova repeated measures within-between interaction

  1. R

    Which test is appropriate for pre and post test (between and within subjects)?

    I have conducted a study where participants are split between two groups (treatment and control). I want to measure changes in depression and sleep disturbance pre and post-test (before and after intervention). I want to see interactions between-subjects for depression and sleep. I also want to...
  2. N

    GPower f (V) effect size interpretation

    I am having difficulty understanding how to interpret effect size f(V) on GPower for a priori sample size calculation for ANOVA repeated-measures, within-between interaction. I am conducting an a priori power analysis to calculate sample size for ANOVA repeated measures, within-between...