Obsessions – recurrent unwanted intrusive thoughts – are one of the two pillars of the Obsessive Compulsive Disorder (OCD). Although OCD has been reported across many different cultures, research on these cultural variations is hampered by the lack of cross-culturally sound instruments to assess intrusive thoughts. The aim of the current study is to investigate the psychometric properties of the recently developed Leuven Obsessional Intrusions Instrument (LOII) in two different cultural contexts. Turkish (N = 663) and Belgian (N = 496) participants were sampled from non-clinical student populations. Results from confirmatory factor analyses yielded a shortened version of the LOII (i.e., LOII-R) with a four-factor solution – aggressive, sexual, and contamination intrusions, and ‘just-right’ doubts – as the best fitting model across both cultures. The model met most criteria for strong measurement invariance, and proved to be both valid and reliable. The results of this study suggest that the LOII-R is a good candidate for cross-cultural studies on obsessional intrusions.

中文翻译：

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两种不同文化中鲁汶强迫性入侵量表的验证和测量不变性

强迫观念——反复出现的不想要的侵入性想法——是强迫症 (OCD) 的两大支柱之一。尽管在许多不同的文化中都报道了强迫症，但由于缺乏跨文化的可靠工具来评估侵入性思想，因此对这些文化差异的研究受到了阻碍。当前研究的目的是调查最近开发的鲁汶强迫性侵入量表 (LOII) 在两种不同文化背景下的心理测量特性。土耳其 (N = 663) 和比利时 (N = 496) 参与者是从非临床学生群体中抽样的。验证性因素分析的结果产生了 LOII（即 LOII-R）的缩短版本，其中包含四因素解决方案——攻击性、性和污染侵入以及“恰到好处”的怀疑——作为跨越两种文化的最佳拟合模型. 该模型满足强测量不变性的大多数标准，并被证明既有效又可靠。这项研究的结果表明，LOII-R 是对强迫性入侵的跨文化研究的良好候选者。