Taylor Nicholas D, Fireman Gary D, Levin Ross
Psychology Department, Suffolk University, 41 Temple Street, Boston, MA 02114, USA.
Sleep Disord. 2013;2013:735812. doi: 10.1155/2013/735812. Epub 2013 Apr 22.
Objective. To date, no studies have directly examined the effects of cognitive trait hostility on prospectively assessed sleep quality. This is important as individuals with heightened trait hostility demonstrate similar patterns of reactivity to perceived stressors as is often reported by poor sleepers. The present study hypothesized that increased trait hostility is associated with poorer subjective sleep quality and that perceived stress mediates this relationship. Methods. A sample of 66 normal sleepers completed daily sleep and stress logs for two weeks. Trait hostility was measured retrospectively. Results. The cognitive dimension of trait hostility was significantly correlated with subjectively rated sleep quality indicators, and these relationships were significantly mediated by perceived daily stress. Individuals with higher levels of trait cognitive hostility reported increased levels of perceived stress which accounted for their poorer sleep ratings as measured by both retrospective and prospective measures. Conclusions. Overall, the findings indicate that high levels of cognitive hostility are a significant risk factor for disturbed sleep and suggest that this might be a fruitful target for clinical intervention.
目的。迄今为止，尚无研究直接考察认知特质敌意对前瞻性评估睡眠质量的影响。这一点很重要，因为特质敌意增强的个体表现出与睡眠不佳者常报告的对感知到的压力源的类似反应模式。本研究假设，特质敌意增加与较差的主观睡眠质量相关，且感知到的压力介导了这种关系。方法。66名正常睡眠者的样本连续两周记录每日睡眠和压力日志。特质敌意通过回顾性测量。结果。特质敌意的认知维度与主观评定的睡眠质量指标显著相关，且这些关系由感知到的日常压力显著介导。特质认知敌意水平较高的个体报告感知到的压力水平增加，这解释了他们在回顾性和前瞻性测量中较差的睡眠评分。结论。总体而言，研究结果表明，高水平的认知敌意是睡眠障碍的一个重要风险因素，并表明这可能是临床干预的一个富有成效的靶点。
