Misattribution of self-generated speech in relation to hallucinatory proneness and delusional ideation in healthy volunteers
Misattribution of self-generated speech in relation to hallucinatory proneness and delusional ideation in healthy volunteers
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DOI：
10.1016/j.schres.2006.01.021
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发表时间：
2006-06-01
影响因子：
4.5
通讯作者：
McGuire, Philip
中科院分区：
文献类型：
--
作者：
Allen, Paul;Freeman, Daniel;McGuire, Philip
当有幻觉和妄想的患者遇到他们自己的语言扭曲时，他们往往会错误地将其归因于其他人。这种对自我产生的材料的外部错误归因被认为与“积极的”精神病症状有关。本研究的目的是研究这一过程与健康人群中幻觉类经历和不寻常信念的易感性之间的关系。57名志愿者完成了对幻觉倾向和妄想的评估，并执行了来源监测任务。参与者听了一系列预先录制的单词，这些单词的来源(自我/非我)和音质(未失真/失真)在不同的试验中是不同的。参与者通过按下按钮来表明这些话是用他们自己的声音说的，还是用别人的声音说的。当被试对自己扭曲的言语做出来源判断时，错误归因错误最大(p<；0.01)，并与妄想分数，特别是持有妄想想法的信念水平呈正相关(p=0.03)，并有与幻觉倾向分数正相关的趋势。当参与者处理自己的扭曲语音时，不确定反应与妄想之间存在负相关(p=-0.03)。自我产生的言语的错误归因发生在具有高水平精神病样经历的健康个体中。这表明，与精神病的连续模型相一致，认知障碍可能是健康人和精神病患者精神病现象的基础。(C)2006爱思唯尔B.V.保留所有权利。
When patients with hallucinations and delusions encounter their own distorted speech they tend to mistakenly attribute it to someone else. This external misattribution of self-generated material is thought to be associated with 'positive' psychotic symptoms. The aim of the present study was to examine this process in relation to the predisposition to hallucination-like experiences and unusual beliefs in a healthy population. Fifty-seven volunteers completed assessments of hallucination proneness and delusional ideation and performed a source-monitoring task. Participants listened to a series of pre-recorded words for which the source (self/non-self) and acoustic quality (undistorted/distorted) of the speech were varied across trials. Participants indicated whether the words were spoken in their own or another person's voice via a button press. Misattribution errors were greatest when participants made source judgements about their own distorted speech (p < 0.01) and were positively correlated with delusional ideation scores, particularly the level of conviction with which delusional ideas were held (p = 0.03), and there was a trend for a positive correlation with hallucination proneness scores. There was a negative correlation between unsure responses and delusional ideation when participants were processing their own distorted speech (p=-0.03). The misattribution of self-generated speech occurs in healthy individuals with high levels of psychotic-like experiences. This suggests that the same cognitive impairments may underlie psychotic phenomena in healthy individuals as in patients with psychotic disorders, consistent with a continuum model of psychosis. (c) 2006 Elsevier B.V. All rights reserved.