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  1. L

    Problems with using independent t-tests for pre-post intervention study

    Thanks for the reply. I forgot to mention one detail. There were two groups (Depressed vs Not Depressed) that were randomized to two conditions (obviously the participants couldn't be ethically randomized into the groups).
  2. L

    Problems with using independent t-tests for pre-post intervention study

    I'm currently reviewing a colleague's paper, and they have an intervention study with 2 groups (therapy vs control) and several outcomes measures taken at pre, post, and a 12 week follow-up. For the data analysis, they looked at changes between pre and post testing (and between pre-test and...