The Community Assessment of Psychic Experiences: Optimal cut‐off scores for detecting individuals with a psychotic disorder

Jaya, Edo Sebastian; Amelsvoort, Thérèse van; Bartels-Velthuis, Agna A.; Bruggeman, Richard; Cahn, Wiepke; Haan, Lieuwe de; Kahn, René S.; Os, Jim van; Schirmbeck, Frederike; Simons, Claudia; Lincoln, Tania M.

doi:10.1002/mpr.1893

Cited by 19 publications

(11 citation statements)

References 39 publications

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“…The scores also covered a broad range for each symptom domain. The data suggest considerable variation from very low symptoms to very high and likely clinically relevant symptoms 69 , 78 . Therefore, we are confident that our sample covered a broad range of the psychosis continuum and that our findings are likely to generalize to samples at its more severe end.…”

Section: Discussionmentioning

confidence: 91%

Expanding the positivity offset theory of anhedonia to the psychosis continuum

2022

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People with schizophrenia and negative symptoms show diminished net positive emotion in low-arousing contexts (diminished positivity offset) and co-activate positive and negative emotion more frequently (increased ambivalence). Here, we investigated whether diminished positivity offset and increased ambivalence covary with negative symptoms along the continuum of psychotic symptoms. We conducted an online-study in an ad-hoc community sample (N = 261). Participants self-reported on psychotic symptoms (negative symptoms, depression, positive symptoms, anhedonia) and rated positivity, negativity, and arousal elicited by pleasant, unpleasant, and neutral stimuli. The data were analyzed with multilevel linear models. Increasing levels of all assessed symptom areas showed significant associations with diminished positivity offset. Increased ambivalence was related only to positive symptoms. Our results show that the diminished positivity offset is associated with psychotic symptoms in a community sample, including, but not limited to, negative symptoms. Ecological validity and symptom specificity require further investigation.

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Section: Discussionmentioning

confidence: 91%

Expanding the positivity offset theory of anhedonia to the psychosis continuum

2022

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“…The authors declare no competing interests. Like the P-scores shown in main Figure 1e, the N-and D-scores in the community sample also covered a range from healthy to values observed in ultra-high risk samples and in diagnosed patients (Jaya et al, 2021;Mossaheb et al, 2012;Schlier et al, 2015).…”

Section: Data and Code Availabilitymentioning

confidence: 56%

“…Self-report measures of psychotic experiences, such as the CAPE questionnaire employed here 32 , are commonly used to estimate a person's position on this continuum, with higher scores indicating higher proneness to psychosis. The CAPE has been extensively validated to this end 32,34,35,53,54 and shows good test-retest reliability 32 . The self-reported dimensions of psychosis that it purports to assess are associated with the corresponding interview-based dimensions 32,55 .…”

Section: Discussionmentioning

confidence: 99%

Individual Differences in Belief Updating and Phasic Arousal Are Related to Psychosis Proneness

Murphy,

Krkovic,

Monov

et al. 2024

Preprint

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Many decisions entail the updating of beliefs about the state of the environment, a process that may go awry in psychosis. When environments are subject to hidden changes in their state, optimal belief updating requires non-linear modulation of sensory evidence, which may be subserved by pupil-linked, phasic arousal. Here, we analyzed behavior and pupil responses during evidence accumulation in a changing environment in a community sample of human participants and assessed their subclinical psychotic experiences (psychosis proneness). Subjects most prone to psychosis showed overall less flexible belief updating profiles, with diminished weighting of late evidence. These same subjects also exhibited overall smaller pupil responses and less reliable pupil encoding of computational variables governing the adaptive belief updating. The observed changes in belief updating and arousal dynamics may account for the emergence of cognitive biases in psychotic psychopathology. Our results open a new window on the pathophysiology of mental disorders.

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“…The psychometric properties of the Indonesian version of the measure such as validity, reliability, and the factorial structure was found to be adequate (Jaya, 2017). CAPE was found useful as an early screening tool for people with schizophrenia (Jaya et al, 2021).…”

Section: Psychotic Symptoms: Community Assessment Of Psychic Experien...mentioning

confidence: 94%

Indonesian Longitudinal Survey on Mental Health and Social Factors (INDOLUMEN): Early Findings and Protocol

Jaya

Hermanto

Audinia

et al. 2022

JPKM

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While many known risk factors and mechanisms for psychosis exist, the time it takes for these risk factors and mechanisms to influence psychosis remains unclear. Furthermore, the average duration of a psychotic symptom has not been estimated. The aim of the study is to discover the average duration of an episode of psychotic symptoms and other mental disorders, as well as the average duration by which psychological mechanisms of risk factors and psychotic symptoms or other mental disorders operate. This study is an online longitudinal survey with various time-interval assessments (baseline, 7 daily, 4 weekly, 4 fortnightly, and 6 monthly assessments). A community sample of Indonesians were recruited via internet and a sample of help-seekers were recruited from clinical practices. From November 2018 to March 2019, we recruited 464 participants who completed the baseline survey from the community. Of the 464 participants, 73% of them are female with ages ranging from 18 - 57 years and 33.2% reported having been diagnosed with at least one mental disorder. The expected results of the surveys provide us with estimates regarding appropriate time-intervals of risk factors and mechanisms of psychosis.

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The Community Assessment of Psychic Experiences: Optimal cut‐off scores for detecting individuals with a psychotic disorder

Cited by 19 publications

References 39 publications

Expanding the positivity offset theory of anhedonia to the psychosis continuum

Expanding the positivity offset theory of anhedonia to the psychosis continuum

Individual Differences in Belief Updating and Phasic Arousal Are Related to Psychosis Proneness

Indonesian Longitudinal Survey on Mental Health and Social Factors (INDOLUMEN): Early Findings and Protocol

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