智能手机成瘾对大学生抑郁症状的影响：睡前拖延的中介作用和心理韧性的调节作用

摘要(中文译文)

为探讨大学生手机成瘾对抑郁症状的影响，考察就寝拖延的中介作用，并探究心理韧性的调节效应。于2024年10月至12月，采用分层随机整群抽样方法，选取4所高校的1 610名大学生作为研究对象。采用手机成瘾指数量表（MPAI）、就寝拖延量表（BPS）、患者健康问卷抑郁量表（PHQ-9）和Connor-Davidson心理韧性量表（CD-RISC-10）进行数据收集。通过相关分析、中介效应分析及有调节的中介模型检验，分析各变量间的关系。（1）抑郁症状与手机成瘾（r=0.456，P<0.01）及就寝拖延（r=0.308，P<0.01）均呈显著正相关，与心理韧性（r=-0.331，P<0.01）呈显著负相关。（2）就寝拖延在手机成瘾与抑郁症状之间起部分中介作用，间接效应为0.284（95% CI：0.226~0.347），占总效应的19.08%。（3）心理韧性显著调节手机成瘾与抑郁症状之间的直接路径（β=-0.017，P<0.01），心理韧性水平较高的个体，其手机成瘾与抑郁症状之间的正相关关系较弱。同时，心理韧性显著调节就寝拖延与抑郁水平之间的关系（β=-0.004，P<0.01），心理韧性水平较高的个体中，就寝拖延与抑郁症状之间的正相关关系较弱。大学生手机成瘾与抑郁症状之间存在有调节的中介模型，就寝拖延起部分中介作用。因此，在预防和干预大学生抑郁症状时，应关注减少过度手机使用、改善睡眠习惯并培养心理韧性，以增强其应对挑战和压力的能力，从而有效降低抑郁症状的风险。

Abstract

To investigate the influence of Smartphone addiction on depression symptoms among college students, examine the mediating role of bedtime procrastination, and explore the moderating effect of psychological resilience. Between October and December 2024, a stratified random cluster sampling method was employed to select 1,610 college students from four universities as research subjects. The Mobile Phone Addiction Index (MPAI), Bedtime Procrastination Scale (BPS), Patient Health Questionnaire-9 (PHQ-9), and Connor-Davidson Resilience Scale (CD-RISC-10) were used for data collection. Correlation analysis, mediation effect analysis, and moderated mediation model testing were conducted to analyze the relationships among variables. (1) Depression symptoms were significantly positively correlated with Smartphone addiction ( = 0.456, < 0.01) and bedtime procrastination ( = 0.308, < 0.01), and significantly negatively correlated with psychological resilience ( = -0.331, < 0.01). (2) Bedtime procrastination partially mediated the relationship between Smartphone addiction and depression symptoms, with an indirect effect of 0.284 (95% CI: 0.226~0.347), accounting for 19.08% of the total effect. (3) Psychological resilience significantly moderated the direct pathway between Smartphone addiction and depression symptoms (β=-0.017, < 0.01), with individuals higher in psychological resilience demonstrating a weaker positive correlation between Smartphone addiction and depression symptoms. Simultaneously, psychological resilience significantly moderated the relationship between bedtime procrastination and depression levels (β = -0.004, < 0.01), with a weaker positive correlation between bedtime procrastination and depression symptoms observed in individuals with higher levels of psychological resilience. A moderated mediation model exists between Smartphone addiction and depression symptoms among college students, with bedtime procrastination serving as a partial mediator. Therefore, in preventing and intervening in depression symptoms among college students, attention should be paid to reducing excessive mobile phone use, improving sleep habits, and cultivating psychological resilience to enhance their ability to cope with challenges and stress, thereby effectively reducing the risk of depression symptoms.

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