The present study investigated the relation between intolerance of uncertainty (IU), meta-worry, and neuroticism on the one
hand, and worry on the other hand, in a sample of 105 university students. Two different operationalizations of worry were
used: trait worry and idiosyncratic worry. Results showed that IU, meta-worry, and neuroticism correlated significantly with
trait worry. Further, IU
... [Show full abstract] and meta-worry were strongly related but made a unique and independent contribution to trait worry.
Finally, IU and meta-worry could be considered as partial mediators of the relation between neuroticism and trait-like worry.
Relations of IU, meta-worry, and neuroticism with idiosyncratic worry were weak or even absent, although neuroticism was associated
with idiosyncratic worry when the stressful event was more imminent. In conclusion, not IU and meta-worry, but the general
vulnerability factor of neuroticism appeared to possess the most declarative value in relation to both trait and idiosyncratic
worry.