Media
2025
Rosenek, N., Ellett, L., & Morriss, J. (2025). The Role of Childhood Trauma, PTSD Symptoms and Pain Coping Strategies in Individuals with Chronic and Acute Pain: A Strength-Based Approach. Cognitive Therapy and Research.
Radua, J., Savage, H., Morriss, J. [20+ authors] (2025). Neural correlates of human fear conditioning and sources of variability in 2199 individuals. Nature Communications, 16, 7869.
Lei, Y., Martinez, A., Huddy, V., Morriss, J., Ellett, L., & Bentall, R. (2025). Intolerance of Uncertainty predicts paranoia over time: Evidence from a UK sample. Journal of Behavior Therapy and Experimental Psychiatry, 89, 102050.
Biagi, N., Byrne, P., & Morriss, J. (2025). Effects of outcome uncertainty related to gain and loss, performance feedback, and individual differences during a cognitive control task. Frontiers in Psychology, 16, 1469701.
FitzGibbon, L., Morriss, J., Clasen, M., Wake, S., Nesbit, R., Malmdorf Andersen, M., Dodd, H. F. (2025). Affective Forecasting During a Haunted House Experience: Insights into Intolerance of Uncertainty. Journal of Anxiety Disorders, 114, 103046.
Morriss, J. & Ellett, L. (2025). Intolerance of uncertainty, paranoia, and prodromal symptoms: Comparisons between a schizophrenia spectrum disorder, anxiety disorder and non‐clinical sample. Psychology and Psychotherapy: Theory, Research and Practice.
Ryan, Z. J., Rayson, H., Morriss, J., & Dodd, H. F. (2025). Does intolerance of uncertainty predict child generalised anxiety? A longitudinal study. Journal of Anxiety Disorders, 112, 103004.
Morriss, J. (2025). Psychological mechanisms underpinning change in intolerance of uncertainty across anxiety-related disorders: New insights for translational research. Neuroscience & Biobehavioral Reviews, 106138.
Morriss, J., Rosenek, N., Gaudiano, B. A., So, S. H., Kingston, J., Lincoln, T., ... & Ellett, L. (2025). Associations between interpersonal trauma and intolerance of uncertainty in an international multi-site sample. Cognitive Therapy and Research, 49(1), 185-192.
2024
Morriss, J., Gaudiano, B. A., So, S. H., Kingston, J., Lincoln, T., Morris, E. M., & Ellett, L. (2024). Associations between intolerance of uncertainty, paranoia, anxiety, and depression: Evidence from an international multisite sample. Mental Health Science, e81.
Morriss, J., Butler, D., & Ellett, L. (2024). Intolerance of uncertainty and psychosis: A systematic review. British Journal of Clinical Psychology.
Morriss, J., Biagi, N., & Wake, S. (2024). Quantification choices for individual differences: An example of mapping self-report to psychophysiological responses. International Journal of Psychophysiology, 205, 112427.
Morriss, J., Rodriguez-Sobstel, C., & Steinman, S. (2024). Intolerance of uncertainty is associated with heightened arousal during extinction learning and retention: Preliminary evidence from a clinical sample with anxiety and obsessive-compulsive disorders. Cognitive Therapy & Research, 1-12.
Morriss, J., Lee, C. E., Wood, A., Zhang, J., & Seabrooke, T. (2024). Attentional bias to uncertainty-based information: A conceptual replication of Fergus et al. (2013). Current Psychology, 1-8.
2023
Morriss, J. (2023). Let's get specific about intolerance of uncertainty and emotion regulation. Personality and Individual Differences, 214, 112336.
Morriss, J. (2023). Distinguishing different parameters of uncertainty under threat in the human brain. Neuroscience & Biobehavioral Reviews, 153, 105385.
Rodriguez-Sobstel, C., Wake, S. J., Dodd, H., McSorley, E., van Reekum, C., & Morriss, J. (2023). Shifty eyes: the impact of intolerance of uncertainty on gaze behaviour during threat conditioning. Collabra: Psychology, 9(1), 82229.
Johnson, D., Ho, W., Uddin, B., Tetteh-Quarshie, S., & Morriss, J. (2023). Evidence for different roles of inhibitory and prospective intolerance of uncertainty during threat discrimination learning. Collabra: Psychology, 9(1), 74822.
Bach, D. R., Sporrer, J., Abend, R., Beckers, T., Dunsmoor, J. E., Fullana, M. A., ... Morriss, J., & Schiller, D. (2023). Consensus design of a calibration experiment for human fear conditioning. Neuroscience & Biobehavioral Reviews, 105146.
Morriss, J., Goh, K., Hirsch, C., & Dodd, H. F. (2023). Intolerance of uncertainty heightens negative emotional states and dampens positive emotional states. Frontiers in Psychiatry, 14.
Morriss, J., Abend, R., Zika, O., Bradford, D. E., & Mertens, G. (2023). Neural and psychophysiological markers of intolerance of uncertainty. International Journal of Psychophysiology, 184, 94-99.
2022
Wake, S., Dalla Verde, A., Biagi, N., Van Reekum, C. M., & Morriss, J. (2022). Just let me check: The role of individual differences in self-reported anxiety and obsessive-compulsive features on subjective, behavioural, and physiological indices during a checking task. International Journal of Psychophysiology, 179, 43-55.
Zuj, D. V., Dymond, S., Murray, S. B., Thomas, S., & Morriss, J. (2022). Intolerance of uncertainty predicts altered threat expectancy ratings during reinstatement. Journal of Experimental Psychopathology, 13(3), 20438087221112330.
Klingelhöfer-Jens, M., Morriss, J., & Lonsdorf, T.B. (2022). Effects of intolerance of uncertainty on subjective and psychophysiological measures during fear acquisition and delayed extinction. International Journal of Psychophysiology, 177, 249-259.
Wendt, J. & Morriss, J. (2022). An examination of Intolerance of Uncertainty and contingency instruction on multiple indices during threat acquisition and extinction training. International Journal of Psychophysiology, 177, 171-178.
Morriss, J., Tupitsa, E., Dodd, H. F., & Hirsch C. R. (2022). Uncertainty makes me emotional: Uncertainty as an elicitor and modulator of emotional states. Frontiers in Psychology, 13, 777025.
Wake, S., Dodd, H., & Morriss, J. (2022). Intolerance of uncertainty and novelty facilitated extinction: The impact of reinforcement schedule. British Journal of Psychology, 113(2), 353-369.
Morriss, J., Bradford, D., Wake, S., Biagi, N., Tanovic, E., Kaye, J., & Joormann, J. (2022). Intolerance of uncertainty and physiological responses during instructed threat of shock: a multi-lab investigation. Biological Psychology, 167, 108223.
2021
Morriss, J., Bell., T., Biagi, N., Johnstone., T., & van Reekum, C. M. (2021). Intolerance of uncertainty is associated with heightened responding in the prefrontal cortex during cue-signalled uncertainty of threat. Cognitive, Affective, & Behavioral Neuroscience.
Morriss, J., Zuj, D. V., & Mertens, G. (2021). The role of intolerance of uncertainty in classical threat conditioning: Recent developments and directions for future research. International Journal of Psychophysiology, 166, 116-126.
Morriss, J., Wake, S., Elizabeth, C, & van Reekum, C. M. (2021). I doubt it is safe: A meta-analysis of self-reported intolerance of uncertainty and threat extinction training. Biological Psychiatry: Global Open Science, 1(3), 171-179.
Morriss, J., Biagi, N., Lonsdorf, T., & Andreatta, M. (2020). The role of intolerance of uncertainty in the acquisition and extinction of reward. European Journal of Neuroscience, 53, 3063-3071
Wake, S., Morriss, J., Johnstone, T., van Reekum, C. M., & Dodd, H. (2021). Intolerance of uncertainty, and not social anxiety, is associated with compromised extinction of social threat. Behaviour Research and Therapy, 139, 103818
Morriss, J., Bennet, K. P., & Larson, C. L. (2021). I told you it was safe: Associations between intolerance of uncertainty and different types of uncertainty during instructed threat of shock. Journal of Behavior Therapy and Experimental Psychiatry, 70, 101620.
Mertens, G. & Morriss, J. (2021). Intolerance of uncertainty and threat reversal: A conceptual replication of Morriss et al. (2019). Behaviour Research and Therapy, 137, 103799.
Lloyd, W.K., Morriss, J., Macdonald, B., Joanknecht, K., Nihouarn, J., & van Reekum, C.M. (2021). Longitudinal change in executive function is associated with impaired top-down frontolimbic regulation during reappraisal in older adults. NeuroImage, 225, 117488.
2020
Morriss, J., Biagi, N., Dodd, H. (2020) Your guess is as good as mine: A registered report assessing physiological markers of fear and anxiety to the unknown in individuals with varying levels of intolerance of uncertainty International Journal of Psychophysiology, 156, 93-104.
Morriss, J., Biagi, N., van Reekum, C. M. (2020). It’s not over yet: The impact of worry on emotional recovery Journal of Experimental Psychopathology, 11(2), 2043808720929940.
Wake, S. J., van Reekum, C. M., Dodd, H., & Morriss, J. (2020). The impact of intolerance of uncertainty and cognitive behavioural instructions on safety learning. Cognitive Therapy and Research, 44, 931–942.
Morriss, J., Wake, S., Lindner, M., McSorley, E., & Dodd, H. (2020). How many times do I need to see to believe? The impact of intolerance of uncertainty and exposure experience on safety-learning and retention in young adults. International Journal of Psychophysiology, 153, 8-17.
Bauer, E. A., MacNamara, A., Sandre, A., Lonsdorf, T. B., Weinberg, A., Morriss, J., & van Reekum., C. M. (2020). Intolerance of uncertainty and threat generalization: A replication and extension. Psychophysiology, 57, e13546.
2019
Morriss, J. (2019). What do I do now? Intolerance of uncertainty is associated with discrete patterns of anticipatory physiological responding to different contexts. Psychophysiology, 56, e13396.
Morriss, J., Saldarini, F., & van Reekum, C. M. (2019). The role of threat level and intolerance of uncertainty in extinction. International Journal of Psychophysiology, 142, 1-9.
Morriss, J., Christakou, A., & van Reekum, C. M. (2019). Multimodal evidence for delayed threat extinction learning in adolescence and young adulthood. Scientific Reports, 9.
Morriss, J. & McSorley, E. (2019). Intolerance of uncertainty is associated with reduced attentional inhibition in the absence of direct threat. Behaviour Research and Therapy, 118, 1-6.
Morriss, J. & van Reekum, C. M. (2019). I feel safe when I know: Contingency information promotes threat extinction in high intolerance of uncertainty individuals. Behaviour Research and Therapy, 116, 111-118.
Morriss, J., Saldarini, F., Chapman, C., Pollard, M., & van Reekum, C. M. (2019). Out with the old and in with the new: The role of intolerance of uncertainty in reversal of threat and safety. Journal of Experimental Psychopathology, 10(1), 1-11.
Morriss, J., Gell, M., & van Reekum, C. M. (2019). The uncertain brain: A co-ordinate based meta-analysis of the neural signatures supporting uncertainty during different contexts. Neuroscience and Biobehavioral Reviews, 96, 241-249
2018
Morriss, J., Hoare, S., & van Reekum, C. M. (2018). It’s time: A commentary on fear extinction in humans using fMRI. Neuroscience and Biobehavioral Reviews, 94, 321-322.
Morriss, J., Chapman, C., Tomlinson, S., & van Reekum, C. M. (2018) Escape the bear and fall to the lion: The impact of avoidance availability on acquisition and extinction. Biological Psychology, 138, 73-80.
Morriss, J. & McSorley, E. & van Reekum, C. M. (2018). I don’t know where to look: The impact of intolerance of uncertainty on saccades towards non-predictive emotional face distractors. Cognition & Emotion, 32(5), 953-962.
Morriss, J., Bell., T., Johnstone., T., van Reekum, C. M. & Hill, J. (2018). Social domains based modulation of neural responses to threat: The different roles of romantic partners versus friends. Journal of Social Neuroscience, 21, 1-11.
2017
McSorley, E., Morriss, J. & van Reekum, C. M. (2017). I spy with my little eye: Motivational relevance guides eye-movements. Biological Psychology, 123, 8-14.
McSorley, E. & Morriss, J. (2017). What you see is what you want to see: Motivationally relevant stimuli can interrupt current resource allocation. Cognition & Emotion, 31(1), 168-174.
2016
Morriss, J., Macdonald, B., & van Reekum, C. M. (2016). What is going on around here? Intolerance of uncertainty predicts threat generalization of learned fear. PlosOne, 11(5), p.e0154494.
Morriss, J., Christakou, A., & van Reekum, C. M. (2016). Nothing is safe: Intolerance of uncertainty is associated with compromised fear extinction. Biological Psychology, 121, Part B, 186-193.
2013-2015
Morriss, J., Christakou, A., & van Reekum, C. M. (2015). Intolerance of uncertainty predicts fear extinction in amygdala-ventromedial prefrontal cortical circuitry. Biology of Mood & Anxiety Disorders, 5(1), 1.
Morriss, J., Taylor, A. N. W., Roesch, E. B., & van Reekum, C. M. (2013). Still feeling it: The time course of emotional recovery from an attentional perspective. Frontiers in Human Neuroscience, 7, 201.