University of Liverpool, Institute of Psychology, Health and Society, Waterhouse Building, Block B, Brownlow St, Liverpool L69 3GL, United Kingdom.
Lancaster University, Spectrum Centre for Mental Health Research, Furness Building C73, Lancaster LA1 4YG, United Kingdom.
Schizophr Res. 2017 Dec;190:77-81. doi: 10.1016/j.schres.2017.03.022. Epub 2017 Mar 18.
There is widespread interest in whether psychosis exists on a continuum with healthy functioning. Previous research has implied that paranoia, a common symptom of psychosis, exists on a continuum but this has not been investigated using samples including both patients and non-patients and up-to-date taxometric methods.
To assess the latent structure of paranoia in a diverse sample using taxometric methods.
We obtained data from 2836 participants, including the general population as well as at-risk mental state and psychotic patients using the P-scale of the Paranoia and Deservedness Scale. Data were analysed using three taxometric procedures, MAMBAC, MAXEIG and L-MODE (Ruscio, 2016), and two sets of paranoia indicators (subscales and selected items from the P scale), including and excluding the patient groups.
Eleven of the twelve analyses supported a dimensional model. Using the full sample and subscales as indicators, the MAMBAC analysis was ambiguous. Overall, the findings converged on a dimensional latent structure.
A dimensional latent structure of paranoia implies that the processes involved in sub-clinical paranoia may be similar to those in clinical paranoia.
人们普遍关注精神病是否与健康功能连续存在。先前的研究表明，偏执狂是精神病的常见症状，存在于连续体中，但这尚未使用包括患者和非患者在内的最新分类测量方法进行调查。
使用分类测量方法评估不同样本中偏执狂的潜在结构。
我们使用偏执和应得量表的 P 量表从 2836 名参与者（包括一般人群以及有患病风险的精神状态和精神病患者）中获得数据。使用三种分类测量程序（MAMBAC、MAXEIG 和 L-MODE（Ruscio，2016））以及两套偏执指标（子量表和 P 量表中的选定项目），包括和不包括患者群体，对数据进行了分析。
12 项分析中有 11 项支持维度模型。使用全样本和子量表作为指标，MAMBAC 分析结果不明确。总体而言，研究结果表明存在维度潜在结构。
偏执的维度潜在结构表明，亚临床偏执狂涉及的过程可能与临床偏执狂相似。
