Jayne Morriss

The influence of trait intolerance of uncertainty on behavioural flexibility

This study examines how intolerance of uncertainty affects behavioural flexibility in a reversal learning task, finding associations with reinforcement sensitivity and performance following reward changes.

Intolerance of uncertainty is associated with heightened responding in the prefrontal cortex during instructed outcome uncertainty of threat

The paper examines how intolerance of uncertainty relates to neural responses in the prefrontal cortex during uncertain threat scenarios.

The role of intolerance of uncertainty in the acquisition and extinction of reward

This study investigates whether intolerance of uncertainty (IU) affects reward extinction, finding that IU is linked to increased corrugator activity to neutral cues during reward learning but not to valence ratings or SCRs.

Longitudinal change in executive function is associated with impaired top-down frontolimbic regulation during reappraisal in older adults

This study links longitudinal decline in executive function with increased prefrontal and amygdala activation during emotion reappraisal and reduced white matter integrity in older adults.

The devil is in the detail: The role of threat level and intolerance of uncertainty in extinction

This study investigates how intolerance of uncertainty affects threat extinction by comparing responses to uncertain stimuli with varying threat levels.

Multimodal evidence for delayed fear extinction in adolescence and young adulthood.

This study finds that younger age is associated with greater amygdala activity and delayed mPFC engagement during fear extinction, mediated by structural integrity of the uncinate fasciculus.

What do I do now? Intolerance of uncertainty is associated with discrete patterns of anticipatory physiological responding to different uncertain contexts

This study examines how intolerance of uncertainty (IU) influences anticipatory physiological responses in different uncertain contexts, finding context-specific effects on skin conductance and corrugator supercilii activity.

Knowledge is power: Contingency instruction promotes threat extinction in high intolerance of uncertainty individuals

This study shows that contingency instructions reduce threat extinction in individuals with high intolerance of uncertainty.

Out with the old and in with the new: The role of intolerance of uncertainty in reversal of threat and safety

This study examines how intolerance of uncertainty (IU) affects threat learning and reversal in a paradigm where threat and safety contingencies are reversed, finding that higher IU is linked to stronger physiological responses to new threat cues during reversal.