Sleep quality is a critical component of successful human functioning. Poor sleep quality is associated with aggressive behavior, yet the psychological mechanisms that drive this effect are incompletely understood. We tested the prediction that the association between poor sleep quality and aggression would be explained, in part, by a magnified experience of positive affect during aggression. We conducted 2 cross-sectional studies (Study 1, N = 388; Study 2, N = 317) and a third preregistered study (N = 379), which tested for mediation across 2 waves that were separated by 14-42 days. Across all 3 studies, we replicated the positive association between poor sleep quality and aggression. However, we did not observe compelling or consistent evidence that poor sleep quality is linked to greater positive affect during aggression. Such aggressive pleasure was temporally stable and predicted subsequent increases in aggressive behavior. These findings support a reinforcement model of aggressive affect, in which the pleasure of aggression promotes greater aggression over time-perhaps explaining why some individuals are more dispositionally aggressive than others. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

中文翻译：

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酸痛的睡眠，甜蜜的报仇？积极的愉悦感可能是导致睡眠质量差与攻击行为联系起来的潜在机制。

睡眠质量是人类成功运作的关键要素。不良的睡眠质量与攻击行为有关，但导致这种作用的心理机制尚未完全理解。我们测试了以下预测：睡眠质量差和攻击性之间的关联将部分地由攻击过程中积极影响的放大体验来解释。我们进行了2项横断面研究（研究1，N = 388；研究2，N = 317）和第三项预先注册的研究（N = 379），测试了在14-42天之间分开的2个波的中介作用。在所有3项研究中，我们重复了不良睡眠质量与攻击性之间的正相关关系。然而，我们没有观察到令人信服或一致的证据，表明睡眠质量差与攻击过程中更大的积极影响有关。这种积极的愉悦感在时间上是稳定的，并且可以预测其积极行为的后续增加。这些发现支持了侵略性情感的强化模型，在这种模型中，随着时间的推移，侵略的乐趣促进了更大的侵略性，也许可以解释为什么某些人在性格上比其他人更具侵略性。（PsycINFO数据库记录（c）2019 APA，保留所有权利）。