Given the importance of affect in the experience of
psychological meaningfulness, we predict complete mediation of the
association of neuroticism and engagement. For assertiveness
and industriousness, the experience of psychological
meaningfulness may be just one pathway that explains the
relationship with engagement. Engagement is likely to result from an
energetic and hardworking approach independent of the
experience of psychological meaningfulness. We therefore
predicted partial mediation of these relationships by psychological meaningfulness: