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Self-reported Intolerance of Uncertainty (IU) is the tendency to find uncertainty aversive. There is a lack of empirical research on how IU modulates anticipatory responding during threatening contexts with different parameters of uncertainty.

Exploratory secondary analyses were conducted on an existing data set (n = 45) to examine whether IU is related to a particular parameter of uncertainty during instructed threat of shock (i.e. certain shock, certain safety from shock, outcome uncertainty of shock, temporal uncertainty of shock).

Analyses revealed that IU was associated with larger auditory startle blink during the anticipatory period for the certain safety from shock condition relative to the certain shock condition.

The sample was relatively small.

Individuals with higher self-reported IU may be more inclined to generalize threat to safety cues in the context …