![]() The UHR criteria include three subgroups: 1. Two prospective evaluated symptom sets are defined: 1. Predictive risk symptoms typically emerge later in the prodromal phase. Initially, predominantly unspecific changes in mood, such as anxiety, irritability, depression, and social withdrawal, are reported 2, 3. In the majority of the cases, the onset of the first psychotic episode is preceded by a prodromal phase with a duration of several years 1. Identifying bridge symptoms between the symptom domains holds the potential to empirically advance the etiological understanding of psychosis and pave the way for tailored clinical interventions. Our analysis provides empirical support for existing theoretical accounts that interaction between the distinct phenomenological domains of BS and APS is characterized by impairments in source monitoring and perspective-taking. Albeit central for the network, predictive cognitive basic BS were relatively isolated from APS. Perceptual BS were linked to perceptual APS. The BS ‘unstable ideas of reference’ and “inability to discriminate between imagination and reality” interacted with attenuated delusional ideation. ![]() ![]() Particular emphasis was placed on points of interaction (bridge symptoms) between the two criteria sets. To explore the interrelationship of APS and predictive BS, we fitted a network analysis to a dataset of 231 patients at CHRp, aged 24.4 years (SD = 5.3) with 65% male. One fundamental problem in the psychopathology of CHRp is to understand how the non-psychotic BS are related to APS. BS do not feature psychotic content as delusion or hallucinations, and reality testing is preserved. Phenomenological, there are substantial differences between BS and APS or BLIPS. Attenuated positive symptoms (APS), transient psychotic-like symptoms (brief, limited intermittent psychotic symptoms, BLIPS), and predictive cognitive-perceptive basic-symptoms (BS) criteria can help identify a help-seeking population of young people at clinical high-risk of a first episode psychosis (CHRp).
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