1David Geffen School of Medicine at UCLA,Los Angeles,California.
2Chicago Neuropsychology Group,Chicago,Illinois.
J Int Neuropsychol Soc. 2018 Aug;24(7):735-745. doi: 10.1017/S1355617718000218. Epub 2018 Apr 29.
The aim of this study was to investigate the relationship of psychological variables to cognitive performance validity test (PVT) results in mixed forensic and nonforensic clinical samples.
Participants included 183 adults who underwent comprehensive neuropsychological examination. Criterion groups were formed, that is, Credible Group or Noncredible Group, based upon their performance on the Word Memory Test and other stand-alone and embedded PVT measures.
Multivariate logistic regression analysis identified three significant predictors of cognitive performance validity. These included two psychological constructs, for example, Cogniphobia (perception that cognitive effort will exacerbate neurological symptoms), and Symptom Identity (perception that current symptoms are the result of illness or injury), and one contextual factor (forensic). While there was no interaction between these factors, elevated scores were most often observed in the forensic sample, suggesting that these independently contributing intrinsic psychological factors are more likely to occur in a forensic environment.
Illness perceptions were significant predictors of cognitive performance validity particularly when they reached very elevated levels. Extreme elevations were more common among participants in the forensic sample, and potential reasons for this pattern are explored. (JINS, 2018, 24, 735-745).
本研究旨在探讨心理变量与混合法医和非法医临床样本认知绩效有效性测试（PVT）结果的关系。
参与者包括 183 名接受全面神经心理学检查的成年人。根据他们在单词记忆测试和其他独立和嵌入式 PVT 测量中的表现，形成了可信组或不可信组的标准组。
多元逻辑回归分析确定了三个认知绩效有效性的显著预测因素。这些因素包括两个心理构念，例如认知恐惧（认知努力会加剧神经症状的感知）和症状身份（当前症状是疾病或伤害的结果的感知），以及一个情境因素（法医）。虽然这些因素之间没有相互作用，但在法医样本中观察到的得分升高更为常见，这表明这些独立贡献的内在心理因素更可能出现在法医环境中。
疾病认知是认知绩效有效性的重要预测因素，尤其是当它们达到非常高的水平时。在法医样本中的参与者中，极端升高更为常见，并且探讨了这种模式的潜在原因。（JINS，2018，24，735-745）。
