ArticleSchizophrenia research2025
The inventory of psychotic-like anomalous self-experiences (IPASE): Stability and relationships with attenuated psychotic symptoms and remission in individuals at-risk for psychosis.
Article in Schizophrenia research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Anomalous self-experiences in biotypes of psychosis.European archives of psychiatry and clinical neuroscience · 2026Article
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16 authors.
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Abstract
backgroundThe IPASE is a self-report measure of basic self-disturbance, a core feature of schizophrenia and ultra-high risk (UHR) states. However, the extent to which basic self-disturbance-as captured by the IPASE-is stable over time and related to the severity or progression of attenuated psychotic symptoms (APS) remains unclear. We examined the temporal stability of IPASE scores, their correlation with APS, and whether they predict changes in APS over time.
methodsThe baseline sample included 185 participants (healthy controls = 72, UHR = 66, first-episode psychosis = 47), with 29 UHR participants re-assessed at month-12. Correlations between IPASE scores and Comprehensive Assessment of At-Risk Mental States (CAARMS) positive symptom scores were evaluated at baseline and month-12. Stability between baseline and month-12 IPASE scores was examined in the longitudinal subsample. Regression was used to predict remission and change in CAARMS scores.
resultsAlthough mean IPASE scores were significantly higher in the UHR group compared to HCs, total IPASE scores were only weakly correlated with CAARMS total scores (ρ=0.27). IPASE subscales showed weak correlations (0.08<ρ<0.27) with CAARMS positive symptom domains. Changes in IPASE and CAARMS scores were not correlated. Moderate stability was found for IPASE total scores (ICC = 0.59) and four subscales (0.58 < ICC < 0.64), excluding the cognition subscale (ICC = 0.3). Baseline IPASE scores did not predict remission (partial R
conclusionThe IPASE is a moderately stable measure in UHR individuals, correlates with the presence of positive psychotic symptoms but only weakly with severity, and does not strongly predict positive symptom change.
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