Predicting the occurrence, conviction, distress, and disruption of different delusional experiences in the daily life of people with schizophrenia.
Recent research has shown that negative emotional states of increased anxiety and sadness prospectively predict the occurrence of persecutory ideation, but it is not known whether these findings extend to other subtypes of delusions. The current study explored whether these negative emotional states, as well as hallucinations, biased reasoning style (ie, jumping to conclusions), and negative self-esteem prospectively predict the occurrence and various dimensions of delusions of control, reference, and grandiosity in real time, as they occur in daily life. One hundred and thirty community-dwelling participants with schizophrenia or schizoaffective disorder completed laboratory measures and momentary self-reports generated by a personal digital assistant multiple times per day, over 7 consecutive days. Analyses were time lagged allowing simultaneous examination of person-level and within-person time-varying relationships among the variables. Approximately, half of the participants reported having at least one delusional experience during the week, and approximately, a quarter of those individuals reported experiencing all 3 delusion subtypes. Hallucinations were a significant predictor of the occurrence of delusions of control and reference over the subsequent hours of the same day, but negative emotional states of anxiety and sadness were not. Negative self-esteem predicted the frequency of all 3 delusion subtypes during the week, and a reasoning style characterized by reduced information gathering was a significant predictor of the frequency of delusions of control. Delusional dimensions of conviction, distress, and disruption had different associations with the variables tested for each delusion subtype.
Institute of Psychology, Illinois Institute of Technology, 3105 South Dearborn Avenue, Chicago, IL 60616, USA. benzeev@iit.edu
Dror
D
Ben-Zeev
Scott
S
Morris
Joel
J
Swendsen
Eric
E
Granholm
D000328:Adult; D001007:Anxiety / Q000453:epidemiology / Q000523:psychology; D003657:Decision Making; D003702:Delusions / Q000453:epidemiology* / Q000209:etiology / Q000523:psychology; D005260:Female; D006212:Hallucinations / Q000453:epidemiology / Q000523:psychology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011618:Psychotic Disorders / Q000150:complications* / Q000523:psychology; D012307:Risk Factors; D012559:Schizophrenia / Q000150:complications*; D012565:Schizophrenic Psychology; D012649:Self Concept
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