Department of Psychology, Ciudad Real Medical School, Universidad de Castilla la Mancha, Camino de Moledores S/N, 13071, Ciudad Real, Spain.
Universidad Autónoma de Madrid, Madrid, Spain.
Sci Rep. 2024 Jul 9;14(1):15809. doi: 10.1038/s41598-024-66846-9.
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, the PIQ was associated with satisfaction with life in both cases and duration of therapy required to receive hospital discharge for the clinical sample. Most importantly, confidence further moderated the extent to which the PIQ scores were linked with both outcomes, with greater consistency between the PIQ and the dependent measures obtained for those with higher confidence. Therefore, asking a single item about the confidence associated with responses to the PIQ enhances the association of PIQ scores and relevant consequences across domains.
评估被害妄想的最常用的自我管理工具之一是迫害观念问卷（PIQ）。PIQ 分数的个体差异很重要，因为它们可以预测与精神病相关障碍相关的症状严重程度。目前的研究表明，PIQ 与两个新的结果相关：生活满意度（研究 1 和 2）和出院所需的治疗时间（研究 2）。最重要的是，我们引入了对量表反应的元认知信心作为一种能够提高 PIQ 预测有效性的结构。在两项研究中，来自普通人群的参与者（研究 1）和来自临床样本的参与者（研究 2）完成了 PIQ，然后报告了对其反应的信心。正如预期的那样，PIQ 在两种情况下都与生活满意度和临床样本获得出院所需的治疗时间相关。最重要的是，信心进一步调节了 PIQ 分数与这两个结果之间的关联程度，对于那些信心较高的人，PIQ 与依赖测量之间的一致性更高。因此，询问一个关于对 PIQ 反应的信心的单项问题，可以增强 PIQ 分数与各个领域的相关结果之间的关联。
