mediation

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 -...

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...

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...

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...

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...