Multimodal assessment of the role of intolerance of uncertainty in fear acquisition and extinction.

Autor: Malbec M; Department of Psychology, Education, and Child Studies, Erasmus University Rotterdam, the Netherlands. Electronic address: malbecdevidts@essb.eur.nl., Andreatta M; Department of General Psychiatry and Psychotherapy with Outpatient Clinic, University Hospital of Tübingen, Germany., Wieser MJ; Department of Psychology, Education, and Child Studies, Erasmus University Rotterdam, the Netherlands. Electronic address: wieser@essb.eur.nl.
Jazyk: angličtina
Zdroj: Biological psychology [Biol Psychol] 2024 Oct; Vol. 192, pp. 108860. Date of Electronic Publication: 2024 Sep 11.
DOI: 10.1016/j.biopsycho.2024.108860
Abstrakt: Personality traits linked to internalizing disorders influence the way we develop fears, but also how we regain a sense of safety. In the present study, we investigated the effect of intolerance of uncertainty (IU) on defensive responses using a differential fear conditioning protocol with an extinction phase. The conditioned stimulus was associated with an aversive sound (90 dB) in 75 % of the presentations during acquisition. A final sample of 176 participants completed the experiment. We measured self-reports of associative (expectancy of the unconditioned stimulus in acquisition) and evaluative learning (arousal and valence), and both physiological (skin conductance response) and electrocortical responses (steady-state visually evoked potentials, ssVEPs; late positive potentials, LPP) to the conditioned stimuli. Our results show that IU's impact is limited, with no effect in both acquisition and extinction. These findings emphasize the necessity of large samples in research on inter-individual differences and contribute to our understanding of how IU may or may not be involved in fear and safety learning processes considering multiple aspects of fear responding.
Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest.
(Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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