Multiple causal mediation analysis for control vs. not able to do the puzzle (PUZ-) for each dimension of experience.

The a-path corresponds to the influence of the predictor (i.e. interview mode) on the mediator variable. The b-path corresponds to the influence of the mediator variable (e.g. competence) on the outcome.

a路径对应预测变量(predictor，即访谈方式)对中介变量(mediator variable)的影响效应，b路径对应中介变量(mediator variable，例如胜任力(competence))对结果变量(outcome)的影响效应。