Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/21276
Title: Mild-to-moderate schizotypal traits relate to physiological arousal from social stress
Authors: Premkumar, P
Alahakoon, P
Smith, M
Kumari, V
Babu, D
Baker, J
Keywords: heart rate;schizotypy;skin conductance;social stress;physiological arousal;public speech
Issue Date: 20-Jul-2020
Publisher: Routledge (Taylor & Francis Group)
Citation: Premkumar, P. et al. (2020) 'Mild-to-moderate schizotypal traits relate to physiological arousal from social stress', Stress, 24 (3), pp. 303 - 317. doi: 10.1080/10253890.2020.1797674.
Abstract: Schizotypy denotes psychosis-like experiences, such as perceptual aberration, magical ideation, and social anxiety. Altered physiological arousal from social stress is found in people with high schizotypal traits. Two experiments aimed to determine the relationship of schizotypy to physiological arousal from social stress. Experiment 1 tested the hypotheses that heart rate from social stress would be greater in high, than mild-to-moderate, schizotypal traits, and disorganized schizotypy would explain this effect because of distress from disorganisation. Experiment 1 tested social stress in 16 participants with high schizotypal traits and 10 participants with mild-to-moderate schizotypal traits. The social stress test consisted of a public speech and an informal discussion with strangers. The high schizotypal group had a higher heart rate than the mild-to-moderate schizotypal group during the informal discussion with strangers, but not during the public speech. Disorganized schizotypy accounted for this group difference. Experiment 2 tested the hypothesis that mild-to-moderate schizotypal traits would have a linear relationship with physiological arousal from social stress. Experiment 2 tested 24 participants with mild-to-moderate schizotypal traits performing the abovementioned social stress test while their heart rate and skin conductance responses were measured. Mild-to-moderate schizotypal traits had a linear relationship with physiological arousal during the discussion with strangers. Distress in disorganized schizotypy may explain the heightened arousal from close social interaction with strangers in high schizotypy than mild-to-moderate schizotypy. Mild-to-moderate schizotypal traits may have a linear relationship with HR during close social interaction because of difficulty with acclimatizing to the social interaction.
Description: This is an Accepted Manuscript of an article published by Taylor & Francis in The International Journal on the Biology of Stress on 20 Jul 2020, available online: https://doi.org/10.1080/10253890.2020.1797674.
URI: https://bura.brunel.ac.uk/handle/2438/21276
DOI: https://doi.org/10.1080/10253890.2020.1797674
ISSN: 1025-3890
Other Identifiers: ORCID iD: Veena Kumari https://orcid.org/0000-0002-9635-5505
Appears in Collections:Dept of Life Sciences Research Papers

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