McKay Ryan, Langdon Robyn, Coltheart Max
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia.
J Nerv Ment Dis. 2006 Aug;194(8):628-31. doi: 10.1097/01.nmd.0000231441.48007.a5.
We report the development and evaluation of a brief questionnaire measure of persecutory ideation, the Persecutory Ideation Questionnaire (PIQ). Our approach was theoretically driven in that the PIQ was constructed in accordance with comprehensive definitional considerations and criteria set out by . Sixty-six more general paranoia-related items were accumulated, and 10 independent raters sorted the items into two sets, "persecutory ideation" and "other." An 80% agreement criterion was set, resulting in 10 persecutory ideation items. The PIQ was evaluated with a nonclinical and a clinical sample. In both samples, it was shown to have excellent reliability (internal consistency) and excellent convergent validity as a measure of certain aspects of general paranoid ideation. Finally, the PIQ shared unique variance with severity of persecutory delusions in the clinical group, providing good criterion validity for the PIQ as a measure of specifically persecutory ideation, rather than paranoia in general.
我们报告了一种迫害观念简短问卷测量工具——迫害观念问卷（PIQ）的开发与评估。我们的方法是理论驱动的，因为PIQ是根据[具体文献]所阐述的全面定义考量和标准构建的。积累了66个与偏执相关的更一般性项目，10名独立评分者将这些项目分为两组，即“迫害观念”和“其他”。设定了80%的一致性标准，最终得到10个迫害观念项目。PIQ在一个非临床样本和一个临床样本中进行了评估。在这两个样本中，它都表现出了出色的信度（内部一致性），并且作为一般偏执观念某些方面的测量工具，具有出色的收敛效度。最后，PIQ在临床组中与迫害妄想的严重程度共享独特方差，为PIQ作为一种专门测量迫害观念而非一般偏执的工具提供了良好的效标效度。
