biostudies-literatureDiaz DMinisterio de Ciencia e Innovación15809https://www.ebi.ac.uk/biostudies/studies/S-EPMC11233644biostudies-literatureUnknown14(1)One of the most used self-administered instruments to assess persecutory delusions is the Persecutory Ideation Questionnaire (PIQ). Individual differences in PIQ scores are important because they predict the severity of symptoms associated with psychosis-related disorders. The current research demonstrates that PIQ is associated with two new outcomes: Satisfaction with life (Studies 1 and 2) and therapy length needed for hospital discharge (Study 2). Most relevant, we introduce meta-cognitive confidence in one's scale responses as a construct capable of improving the predictive validity of the PIQ. Across two studies, participants from the general population (Study 1) and from a clinical sample (Study 2) completed the PIQ and then reported the confidence in their responses. As expected, thScientific reportsThe association of the persecutory ideation questionnaire with clinically-relevant and other outcomes: the moderating role of confidence.PMC11233644PID2020-116651GB-C32Brinol PPetty REStavraki MBajo MBeato-Fernandez LDiaz DfalseThe association of the persecutory ideation questionnaire with clinically-relevant and other outcomes: the moderating role of confidence.One of the most used self-administered instruments to assess persecutory delusions is the Persecutory Ideation Questionnaire (PIQ). Individual differences in PIQ scores are important because they predict the severity of symptoms associated with psychosis-related disorders. The current research demonstrates that PIQ is associated with two new outcomes: Satisfaction with life (Studies 1 and 2) and therapy length needed for hospital discharge (Study 2). Most relevant, we introduce meta-cognitive confidence in one's scale responses as a construct capable of improving the predictive validity of the PIQ. Across two studies, participants from the general population (Study 1) and from a clinical sample (Study 2) completed the PIQ and then reported the confidence in their responses. As expected, th2024-01-01T00:00:00Z2024 Jul2025-04-04T11:24:58.203Z2025-04-04T11:24:58.203ZS-EPMC112336443898215610.1038/s41598-024-66846-9