Department of Psychology, University of Turin, Turin, Italy.
California School of Professional Psychology, Alliant International University.
J Pers Assess. 2020 Jul-Aug;102(4):563-572. doi: 10.1080/00223891.2019.1566914. Epub 2019 Feb 4.
The Inventory of Problems-29 (IOP-29) is a newly developed, self-administered test designed to assist practitioners evaluating the credibility of various symptom presentations. In a recent simulation study comparing real patients against experimental feigners, its classification accuracy compared favorably with that of the Structured Inventory of Malingered Symptomatology and generalized better to different types of symptom reports (i.e., mood- or trauma-related vs. psychosis-related). Extending on these findings, this sensitivity study tested whether the IOP-29 would be similarly accurate in detecting feigning of conditions related to depression, mild traumatic brain injury, posttraumatic stress disorder (PTSD), and schizophrenia. Additionally, it also evaluated the susceptibility of the IOP-29 to uncooperative or random-like responding. Examination of 1,200 IOP-29 records from 400 nonclinical Italian volunteers who took the Italian version of the IOP-29 3 times, in 3 different conditions (i.e., standard instructions, feigned disorder, and random-like responding), confirmed that the IOP-29 might be similarly valid across a wide variety of mental health and cognitive complaints. Indeed, using the standard a priori cutoff of the IOP-29 (i.e., ≥ .50), sensitivity estimates ranged from .86 (for feigned PTSD) to .95 (for feigned depression) and did not significantly differ from one symptom presentation to another. These findings were obtained despite the fact that participants were coached to respond in a believable manner. Interestingly, the random-like responding generated extremely variable IOP-29 scores.
问题清单-29（IOP-29）是一种新开发的、自我管理的测试，旨在帮助评估者评估各种症状表现的可信度。在最近一项将真实患者与模拟装病者进行比较的模拟研究中，与结构伪装症状清单相比，其分类准确性相当，并且可以更好地推广到不同类型的症状报告（即，情绪或创伤相关与精神病相关）。在此基础上，这项敏感性研究测试了 IOP-29 是否能够同样准确地检测与抑郁、轻度创伤性脑损伤、创伤后应激障碍（PTSD）和精神分裂症相关的装病情况。此外，还评估了 IOP-29 对不合作或随机样反应的敏感性。对 400 名非临床意大利志愿者的 1200 份 IOP-29 记录进行了检查，这些志愿者在 3 种不同条件下（即标准说明、伪装障碍和随机样反应）3 次接受了 IOP-29 的意大利语版本，结果证实 IOP-29 可能在广泛的心理健康和认知障碍中具有相似的有效性。实际上，使用 IOP-29 的标准先验截止值（即≥0.50），灵敏度估计值从 0.86（假装 PTSD）到 0.95（假装抑郁）不等，并且与一种症状表现没有显著差异。尽管参与者接受了以可信方式回答的指导，但仍获得了这些发现。有趣的是，随机样反应产生了非常可变的 IOP-29 分数。
