Im running a study that tests whether an intervention is effective in reducing depression levels, increasing well-being, optimism and self-esteem and increasing positive affect. My DV's are: Depression, Well-being, Optimism, Self-Esteem, Positive/Negative affect. my iv is the intervention itself.
There are 62 participants in the Pre-assessment condition and 70 participants in the post-assessment condition however its a within sample.
which statistical analysis should i use? A T-test or Anova?