The construct validity of the Inventory of Psychotic-Like Anomalous Self-Experiences (IPASE) as a measure of minimal self-disturbance: Preliminary data.
Barnaby Nelson, Emily Li, David C Cicero, Łukasz Gawęda, Jessica A Hartmann, Danny Koren, Andrea Polari, Thomas J Whitford, Suzie Lavoie
Early Intervention in Psychiatry June 1, 2019 DOI: 10.1111/eip.12711 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Cross-sectional validation study Peer reviewed |
|---|---|
| Sample size | 46 |
| Population | Ultra-high risk for psychosis patients, first episode psychosis patients, and healthy controls |
| Topics | Philosophy of mind |
| Keywords | Prodrome Psychometrics Psychopathology Ultra-high risk |
| Citations | 39 |
| Key findings | The IPASE demonstrates convergent validity through its very strong correlation (r = 0.92) with the EASE and discriminant validity through weaker correlations with other symptom measures. |
Abstract
The Inventory of Psychotic-Like Anomalous Self-Experiences (IPASE) is a self-report measure of minimal self-disturbance. The aim of the current report was to assess the construct validity of the scale by examining its convergent validity with the gold-standard measure of minimal self-disturbance, the Examination of Anomalous Self-Experience (EASE), and its discriminant validity. The sample consisted of 46 participants (21 ultra-high risk for psychosis patients, 14 first episode psychosis patients, 11 healthy controls). Correlations between the clinical instruments were examined. The IPASE correlated strongly with general psychopathology and positive psychotic symptoms, moderately with negative symptoms, and weakly with manic symptoms. The strongest correlation (r = 0.92) was apparent between IPASE and EASE total scores. These preliminary data indicate construct validity of the IPASE, demonstrating both convergent and discriminant validity. The IPASE may be suitable as a screener measure for minimal self-disturbance, but should not be used as a replacement to measure the construct of minimal self-disturbance, which requires considerable psychopathological sophistication.
Comparable studies
Other cross-sectional and survey studies on philosophy of mind, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Survey of entity encounter experiences occasioned by inhaled N,N-dimethyltryptamine: Phenomenology, interpretation, and enduring effects. People who had a memorable entity encounter after taking N,N-dimethyltryptamine | 2020 | Survey | n = 2,561 |
| Future directions in meditation research: Recommendations for expanding the field of contemplative science Meditators | 2018 | Cross-sectional online survey | n = 1,120 |
| The Phenomenology of Lucid Dreaming: An Online Survey Respondents to an online survey about lucid dreams | 2014 | Online survey | n = 684 |
| The neurophenomenology of early psychosis: An integrative empirical study. Ultra-high risk for psychosis patients, first episode psychosis patients, and healthy... | 2019 | Cross-sectional | n = 123 |
| Spontaneous Spiritual Awakenings: Phenomenology, Altered States, Individual Differences, and Well-Being People reporting their most powerful Spontaneous Spiritual or Kundalini Awakening | 2021 | Mixed within and between-participants self-report survey design | n = 152 |
Citations in the library
Cited by 10
- Towards a Neurophenomenological Understanding of Self-Disorder in Schizophrenia Spectrum Disorders: A Systematic Review and Synthesis of Anatomical, Physiological, and Neurocognitive Findings Brain Sciences May 23, 2023
- Psychotic-like anomalous self-experiences in feeding and eating disorders: Their role in eating psychopathology through the mediation of body uneasiness and embodiment and identity disorders. Early Intervention in Psychiatry November 1, 2024
- Gamma-band network segregation links corollary discharge dysfunction and anomalous self-experiences in schizophrenia Schizophrenia Research October 22, 2026
- Comparative profiles of anomalous self-experiences and social cognition in clinical high risk for psychosis and autism spectrum disorder. Schizophrenia Research: Cognition June 11, 2026
- Anomalous self-experiences in biotypes of psychosis European Archives of Psychiatry and Clinical Neuroscience June 5, 2026
and 5 more in the library
Cites 8
- Self‐experience in the early phases of schizophrenia: 5‐year follow‐up of the Copenhagen Prodromal Study World Psychiatry October 1, 2011
- The Inventory of Psychotic-Like Anomalous Self-Experiences (IPASE): Development and validation. Psychological Assessment January 2017
- Disturbances of the Basic Self and Prodromal Symptoms Among Young Adolescents From the Community: A Pilot Population-Based Study. Schizophrenia Bulletin September 2016
- Rediscovering psychopathology: the epistemology and phenomenology of the psychiatric object. Schizophrenia Bulletin December 23, 2012
- Quality of hallucinatory experiences: differences between a clinical and a non-clinical sample. World Psychiatry June 1, 2012
and 3 more in the library