School of Psychology, University of New South Wales, Sydney, NSW 2052, Australia.
J Behav Ther Exp Psychiatry. 2013 Sep;44(3):343-50. doi: 10.1016/j.jbtep.2013.01.005. Epub 2013 Feb 8.
The aim of the current study was to examine cognitive and psychological factors hypothesized to affect responding to intrusions in obsessive-compulsive disorder (OCD).
A group of individuals diagnosed with OCD (N = 22) was compared to a social phobia (SP) group (N = 25) and a nonclinical control group (N = 24). Participants performed a battery of neuropsychological tasks, completed self-report measures, and engaged in a self-relevant thought suppression task.
Participants in the OCD group demonstrated worse working memory and response inhibition on the neuropsychological tasks and had increased intrusions during the suppression task relative to comparison groups. They also reported more distress during the task relative to the nonclinical group, but not the SP group. Regression analyses revealed that beliefs about thought control failures, but not working memory or response inhibition, was associated with increased frequency of intrusions and greater distress during suppression.
Future studies may include a more comprehensive battery of cognitive tests and have a larger sample size.
Findings support cognitive-behavioural models of OCD that emphasize the role of meta-beliefs in explaining the struggle with obsessional thoughts.
本研究旨在探讨假设影响强迫症（OCD）个体对侵入性思维反应的认知和心理因素。
一组被诊断为 OCD 的个体（N=22）与社交恐惧症（SP）组（N=25）和非临床对照组（N=24）进行了比较。参与者完成了一系列神经心理学任务，完成了自我报告量表，并进行了自我相关的思维抑制任务。
OCD 组在神经心理学任务中表现出较差的工作记忆和反应抑制，并且在抑制任务中比对照组有更多的侵入性思维。与非临床组相比，他们在任务中报告了更多的痛苦，但与 SP 组没有。回归分析表明，与工作记忆或反应抑制相比，对思维控制失败的信念与侵入性思维的频率增加和抑制过程中的痛苦增加有关。
未来的研究可能包括更全面的认知测试和更大的样本量。
研究结果支持强调元信念在解释强迫性思维的挣扎中的作用的 OCD 的认知行为模型。
