The relationship between sleep quality and psychological resilience of college students: the examination of insomnia as a mediator and attachment as a moderator

University students in Beijing show a certain degree of sleep problems (mean PSQI = 8.27, SD = 3.56), with 43.59% having experienced insomnia. Their psychological resilience is relatively good (mean = 3.48, SD = 1.81). There is a positive correlation between sleep quality and insomnia index among college students (<i>β</i> = 1.36, <i>p</i> < 0.001); poorer sleep quality is associated with lower psychological resilience (<i>β</i> = -0.02, <i>p</i> < 0.05), higher insomnia index is associated with lower resilience (<i>β</i> = -0.01, <i>p</i> < 0.1), and students with insecure attachment exhibit lower psychological resilience compared to those with secure attachment (<i>β</i> = -0.50, <i>p</i> < 0.001). Of the total effect of sleep quality on psychological resilience, 39.24% is mediated through insomnia, while the remaining 60.76% is a direct effect. Adult secure attachment can effectively moderate the sleep-insomnia pathway. This research may help to understand the relationship among sleep quality, attachment, and psychological resilience.