大学生手机使用时长自我监控对手机依赖倾向的影响

Effect of self-monitoring mobile phone use time on mobile phone dependence tendency in college students

目的:探讨大学生手机使用时长自我监控对手机依赖倾向的影响,分析自我控制在手机使用时长自我监控与手机依赖倾向之间的中介作用。方法:招募98名大学生,将其随机分为自我监控组(n=49)和对照组(n=49),自我监控组每晚临睡前报告手机使用时长,共报告2周,对照组不报告。使用自我控制量表(SCS)与手机依赖指数(MPAI)在干预前后进行测量,使用逐步回归法和bootstrap法对自我控制在手机使用时长自我监控和手机依赖倾向间的中介作用进行检验。结果:重复测量方差分析结果显示,两组SCS和MPAI得分的时间与分组的交互作用有统计学意义(P<0.05)。进一步的简单效应分析发现,自我监控组SCS干预后得分高于基线(P<0.01),而MPAI干预后得分低于基线(P<0.001);对照组SCS和MPAI干预后与基线得分差异均无统计学意义(均P>0.05)。自我监控组SCS差值(干预后得分-基线得分)在手机使用时长自我监控对MPAI差值(基线得分-干预后得分)的影响中起部分中介作用,95%CI为[-0.30,-0.03]。结论:手机使用时长自我监控有可能缓解手机依赖倾向,并可能通过提升自我控制水平减少大学生手机依赖倾向的发生。

Objective:To explore the effect of self-monitoring mobile phone use time on mobile phone dependence tendency in college students,and to investigate the mediating effect of self-control between self-monitoring mobile phone use time and mobile phone dependence tendency.Methods:Totally 98 college students were recruited and randomly assigned into the self-monitoring group(n=49)and the control group(n=49).The self-monitor group reported the length of mobile phone use before going to bed every night for 2 weeks,while the control group did not report.Before and after the experiment,the Self-Control Scale(SCS)and Mobile Phone Addiction Index(MPAI)were used to measure self-control and mobile phone dependence tendency.Stepwise regression and bootstrap were used to test the mediating effect of self-control between self-monitoring mobile phone use time and mobile phone dependence tendency.Results:Repeated measurement analysis of variance showed that the SCS and MPAI scores of the two groups,the interaction of time and group was statistically significant(P<0.05).Further simple effects analysis found that the SCS scores in the self-monitoring group were higher after intervention than at baseline(P<0.01),and the MPAI scores were lower after intervention than at baseline(P<0.001).There was no significant difference between before and after intervention scores of SCS and MPAI in the control group(Ps>0.05).The difference of SCS scores between before and after intervention in the self-monitoring group(post-intervention score minus baseline score)played a partially mediating role in the effect of self-monitoring mobile phone use time on the difference of MPAI scores between before and after intervention in the self-monitoring group(95%CI:-0.30--0.03).Conclusion:Self-monitoring mobile phone use time could alleviate the tendency of mobile phone dependence,and may reduce the possibility of mobile phone dependence tendency by improving the level of self-control in college students.