Department of Research, BC Mental Health and Addiction Services, Vancouver, Canada.
Psychiatry Res. 2010 Apr 30;176(2-3):229-35. doi: 10.1016/j.psychres.2009.03.004. Epub 2010 Mar 6.
The purpose of this study was to compare the clinical utility of PAI and MMPI-2 validity indicators to detect exaggeration of psychological symptoms. Participants were 49 (75.5% female) Australian university students who completed the MMPI-2 and PAI under one of three conditions: Control [i.e., honest responding (n=20)], Feign Post Traumatic Stress Disorder [PTSD (n=15)], or Feign Depression (n=14). Participants instructed to feign depression or feign PTSD had significantly higher scores on the majority of MMPI-2 and PAI validity indicators compared with controls. The Meyers Validity Index, the Obvious-Subtle index, and the Response Bias Scale were the most accurate MMPI-2 validity indicators. Diagnostic-specific MMPI-2 validity indicators, such as the Infrequency-PSTD scales and Malingered Depression scale, were not effective at detecting participants instructed to feign those conditions. For the PAI, the most accurate validity indicator was the MAL index; however, the detection rate using this validity indicator was modest at best. The MMPI-2 validity indicators were clearly superior to those on the PAI at identifying feigned versus honest responding in this sample.
本研究旨在比较 PAI 和 MMPI-2 效度指标在检测心理症状夸大方面的临床效用。参与者为 49 名（75.5%为女性）澳大利亚大学生，他们在以下三种条件下之一完成了 MMPI-2 和 PAI：控制[即诚实反应（n=20）]、假装创伤后应激障碍（PTSD；n=15）或假装抑郁（n=14）。与对照组相比，指示假装抑郁或假装 PTSD 的参与者在大多数 MMPI-2 和 PAI 效度指标上的得分明显更高。迈耶斯效度指数、明显-微妙指数和反应偏差量表是最准确的 MMPI-2 效度指标。特定于诊断的 MMPI-2 效度指标，如不常见 PTSD 量表和伪装抑郁量表，在检测指示那些条件的参与者时并不有效。对于 PAI，最准确的效度指标是 MAL 指数；然而，使用该效度指标的检测率充其量只是适度的。在本样本中，MMPI-2 效度指标在识别假装与诚实反应方面明显优于 PAI 上的指标。
