mediation

  1. B

    ANOVA and mediation- could someone CHECK over this with me? Help gratefully received

    Hi, I really hope someone could help me out. I'm having a crisis of confidence. I have a PhD in psychology but it's been a while since I did "proper" stats analysis. I would be super grateful if someone could have a look over a completed ANOVA and mediation analysis (simple mediation -...
  2. A

    multiple mediators and multiple dvs - different results AMOS and MEDIATE (Hayes)

    I have a path model (longitudinal data): 1 independent variable (iv), 4 potential mediators (ms), 4 dependent variables (dvs); I compared models (chi square difference test) with and without direct effects of the iv on the dvs and the models did not differ, i.e. I chose the more parsimonious...
  3. J

    Mediation without hypothesizing a direct effect

    I know the current view (contrary to Baron & Kenny) is that you do not need to find a significant direct effect to test for mediation (e.g., Shrout & Bolger). However, can you still test for mediation if you do not hypothesize a direct effect? For example, I'm testing a model in which X...
  4. M

    Nominal Mediation - Is it possible to test for mediation with a nominal dependent?

    Hi everyone, I'm currently working on my thesis which involves mediation using nominal independents and dependents, as well as scale mediators. I understand that binary mediation is possible, using logit or probit models. However, is it possible to test for mediation when your dependent...
  5. L

    Minimum sample size for moderation analysis

    Hi everyone, And thanks for the great job you are doing here. I have a question regarding statistical power and regression. How can I calculate the minimum sample size based on the number of moderators I have in multiple regression? Is there an online tool for this? If for example I have 5...