In terms of the effect of core self-evaluation on the relationship between class environment and adolescent depression, inconclusive, even conflicting findings have been reported by researchers. One of the major inconsistencies focuses on the specific role core self-evaluation may play in this relation. Specifically, it remains unclear whether core self-evaluation actually functions as a mediator or a moderator. Researchers who view the function of core self-evaluation as mediation posit that core self-evaluation, as a type of personality trait...