Why do respondents makeanswers "Neither agree nor disagree"and/or aberrant responses on a personality test?

在自我报告型人格量表上，许多研究开发了许多不同的方法来检测反应偏差，并研究了产生偏差的过程。最近的一种方法是使用基于项目反应理论的个人适合指数。第一项研究“通过人格契合度检测人格测试中的异常答案”发现，通过人格契合度检测假好的应答者很难，但对假坏的应答者有效。并且，认识到能力测试和人格测试在畸变反应上的差异。下一项研究“一个性格描述性的词与其反义词是否意味着双相人格维度，另一个词是单极人格维度？”提供了一组反转项目来检验默许。并且，它会检查人格特征是双相的还是单极的。在代表双相人格特质的问题上，预测具有中等程度双相人格特质的个体回答“既不同意也不反对”。另一方面，在单极特质上，因为不可能回答“既不同意也不反对”或“中立”，所以回答这个问题的人不具备这种特质。为了证实这些假设，反转项目池是可用的。最后，“通过人格测试中的反转项目检验默认行为”研究考察了默认行为对明尼苏达多相人格量表（MMPI）中Hy和Pt量表的影响。Bentler, Jackson, and & Messick（1971）之后，通过潜在结构分析评估了协议默许和协议默许的影响。因此，接受性默认对量表得分的影响是中等的，而同意性默认对量表得分的影响较小。而且，它也澄清了影响是相当小的影响相比，潜在特质的影响。

On a self-report personality inventory, many researches have developed many different methods to detect a response bias and investigated what processes have generated the bias. One recent method is using the person-fit index based on item response theory. The first study, "Detection of aberrant answers in a personality test through person-fit," found that it was difficult to detect the faking-good respondents, but effective for the faking-bad by person-fit. And, it was recognized the differences in the aberration responses between ability tests and personality tests.The next study "Dose a personality descriptive word with its antonym imply a bipolar personality dimension, another word unipolar one?" provided a pool of reversal items in order to examine acquiescence. And, it is examined whether a personality trait is bipolar or unipolar. On items representing the bipolar personality trait, it is predicted that the individual with moderate degree of the trait answers "neither agree nor disagree." On the other hand, on the unipolar trait, because it is impossible to answer "neither agree nor disagree" or "neutral," the individual who answers this one doesn't have the trait. To confirm these hypotheses, the pool of reversal items is available.Finally, the study "Examination of acquiescence through reversal items on a personality test," examined influences of acquiescence on the Hy and the Pt scale in the Minnesota Multiphasic Personality Inventory (MMPI). After Bentler, Jackson, and ＆ Messick (1971), influences of agreement acquiescence and agreement acquiescence were evaluated through the latent structure analysis. So, acceptance acquiescence influenced the scale scores moderately, but agreement acquiescence had few influences. And, it was clarified also that the influence was considerably small compared with the influence by a latent trait.