Compared to other Western countries, malingering research is still relatively scarce in the United Kingdom, partly because only a few brief and easy-to-use symptom validity tests (SVTs) have been validated for use with British test-takers. This online study examined the validity of the Inventory of Problems–29 (IOP–29) in detecting feigned schizophrenia and random responding in 151 British volunteers. Each participant took three IOP–29 test administrations: (a) responding honestly; (b) pretending to suffer from schizophrenia; and (c) responding at random. Additionally, they also responded to a schizotypy measure (O-LIFE) under standard instruction. The IOP–29’s feigning scale (FDS) showed excellent validity in discriminating honest responding from feigned schizophrenia (AUC = .99), and its classification accuracy was not significantly affected by the presence of schizotypal traits. Additionally, a recently introduced IOP–29 scale aimed at detecting random responding (RRS) demonstrated very promising results.

与其他西方国家相比，英国的伪装研究仍然相对稀少，部分原因是只有少数简短且易于使用的症状有效性测试 (SVT) 已被验证可用于英国考生。这项在线研究检查了问题清单 - 29 (IOP-29) 在检测 151 名英国志愿者的假装精神分裂症和随机反应方面的有效性。每个参与者都参加了三项 IOP-29 测试：(a) 诚实地回答；(b) 假装患有精神分裂症；(c) 随机响应。此外，他们还对标准指导下的分裂症测量 (O-LIFE) 做出反应。IOP-29 的假装量表 (FDS) 在区分诚实反应和假装精神分裂症 (AUC = .99) 方面表现出极佳的有效性，并且其分类准确性不受分裂型特征的存在显着影响。此外，最近推出的旨在检测随机响应 (RRS) 的 IOP-29 量表显示出非常有希望的结果。