is mediation causal why does mediator cause iv which of the following is true about a mediator? what is mediation a relationship which variable can be directly explained by the mediator why do mediators have iv and dv in the mediation model mediator is a type of causal model is a mediator a causal variable which variable is the mediator vs the independent variable can mediation be statistically manipulated does mediation cause the independent variable in a model which is a causal relationship between an independent and a mediational model? is mediation causal which of the following is an example of a mediation model? what is iv and vv does mediation cause mediator which variable is associated with the mediator is mediator causal why mediation model is useful is mediation causal or not