Cited by 295Schizophrenia research and treatmentMental Health Research TopicsMental Health and Psychiatry

Behavioural sensitization to daily life stress in psychosis

MYIN-GERMEYS, I., DELESPAUL, PH., VAN OS, J.·2005·Psychological Medicine

Abstract

BACKGROUND: Recent neurobiological models provide a possible mechanism of daily life stress directly affecting the intensity of psychotic experiences in vulnerable individuals. In order to validate such a mechanism, the impact of daily life stress on psychosis intensity was investigated in two groups at increased risk of onset (relatives) and relapse (patients) of psychosis. METHOD: Patients with psychosis in a clinical state of remission (n = 42), first-degree relatives (n = 47), and control subjects (n = 49) were studied with the Experiencing Sampling Method (ESM is a structured diary technique assessing current context and psychopathology in daily life) to assess (1) appraised subjective stress related to daily activities and events, and (2) intensity of subtle psychotic experiences in daily life. RESULTS: Multilevel regression analyses revealed significant increases in psychosis intensity associated with increases in subjective activity--and event-related stress in patients. First-degree relatives reported increases in psychosis intensity in relation to activity-related stress but not event-related stress. No association was found in control subjects. CONCLUSIONS: Subjects at increased risk for psychosis show continuous variation in the intensity of subtle psychotic experiences associated with minor stresses in the flow of daily life. Behavioural sensitization to environmental stress may therefore be a vulnerability marker for schizophrenia, reflecting dopaminergic hyper-responsivity in response to environmental stimuli.

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Crossref · 10.1017/s0033291704004179

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Authors
MYIN-GERMEYS, I., DELESPAUL, P., & VAN OS, J.
Venue
Psychological Medicine
Published
2005-01-05
Volume
35
Issue
5
Pages
733-741
ISSN
  • 0033-2917 (ISSN-L)
  • 1469-8978
OpenAlex
W2142678392
Cited by
292
References
0
Citations by year
2026: 2 · 2025: 8 · 2024: 9 · 2023: 11 · 2022: 7 · 2021: 16 · 2020: 9 · 2019: 9 · 2018: 11 · 2017: 10 · 2016: 15 · 2015: 14 · 2014: 18 · 2013: 22 · 2012: 14
FWCI
10.62
Type
journal article
Language
en
Open access
closed
Locations
  • Psychological Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Lirias (KU Leuven) (submittedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Mental Health Research Topics
  • Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
Keywords
psychosis, daily stress, behavioral sensitization, first-degree relatives, schizophrenia, vulnerability indicators, relapse risk
MeSH terms
Adult, Female, Humans, Life Change Events, Male, Middle Aged, Periodicity, Psychotic Disorders, Regression Analysis, Social Environment, Stress, Psychological

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