This study investigated the relationship between DP and PMPU among college students and the mediation of anxiety and moderation of 2019-nCoV traumatic experience in this relationship. These findings provide colleges and universities with recommendations for preventing PMPU among college students.
Firstly, the results indicate that DP is positively associated with PMPU among college students. Our findings are consistent with those in the literature [9] in that we not only demonstrated that DP as a personality trait was a significant predictor of PMPU, but also applied these findings to the Chinese university student population. DP is a maladaptive mode of postponing decisions when confronted with conflicts and options [21]. People who are accustomed to procrastination are more inclined to pursue the pleasures of the moment and tend to lose sight of long-term intentions and pursuits [43]. Individuals with a high level of DP are easily distracted [44], and instant gratification-based distractions appeal to them more [45]. College students can easily exhibit excessive mobile phone usage due to the addictive nature of available entertainment and social mobile phone functions [3]. Moreover, it has been observed that persons exhibiting elevated levels of procrastination are more prone to engaging in problematic Internet usage, reinforcing their inclination toward developing mobile addiction [9]. Therefore, DP may contribute to PMPU among college students.
Secondly, our results indicate that anxiety partially mediated the relationship between DP and PMPU, suggesting that DP may indirectly influence PMPU among college students through anxiety. Consistently with other researches, our findings indicate that DP is associated with anxiety [19], and that students who procrastinated experience greater anxiety [12]. Moreover, the research indicates that PMPU is associated with anxiety [46]. PMPU is likely to develop when individuals experienced high anxiety levels [47]. When an individual has a psychological problem, they may use social media to affirm their value [28], exacerbating the problem of PMPU. In addition, our findings indicate that DP as a personal trait may cause negative emotions, such as anxiety, and PMPU, supporting the application of the I-PACE theoretical model in trait procrastination and PMPU research.
Thirdly, the researches results showed 2019-nCoV traumatic experience positively moderated the mediation effects of anxiety between DP and PMPU. In details, higher degree of 2019-nCoV traumatic experience strengthened the mediation effects of DP on PMPU through anxiety. Many reasons for this may exist. On one hand, a study indicated that the anxiety level of individuals during the 2019-nCoV pandemic was significantly higher than that before the pandemic [48]. As an adverse life event, the 2019-nCoV pandemic has exerted a slight negative effect on the mental health of college students [49]. On the other hand, quarantine policies during the 2019-nCoV pandemic may have caused individuals to overuse their smartphones, thereby increasing the likelihood of PMPU [50]. Several studies have demonstrated that the incidence of PMPU during the 2019-nCoV pandemic is significantly higher than before the outbreak [31]. Therefore, 2019-nCoV traumatic experience may amplify the effect of anxiety on college students' PMPU. This study results provided empirical evidence that 2019-nCoV traumatic experience strengthened the mediation effects of anxiety between DP and PMPU.
The results of this study have significant practical contributions. Firstly, college instructors should encourage students to act immediately upon deciding to reduce DP. Secondly, colleges and universities should strengthen anxiety interventions for college students, such as mental health courses, group counseling activities, and individual counseling, to help them to alleviate anxiety. Thirdly, college instructors should assist students in developing a proper understanding of disaster cognition and preparing for 2019-nCoV traumatic experience.
There are some limitations in this study, which should be addressed by future researches. First, although the variables chosen for inclusion in the study were based on theory, the design was cross-sectional, making it challenging to draw more robust causal conclusions. Longitudinal studies should be conducted in future research. Second, data collection was reliant on self-reporting, which may have caused reporting bias. Therefore, interview research should be incorporated into future studies. Third, because the study subjects were from only two Chinese cities, extrapolation to other regions requires caution. Therefore, future studies should use expanded samples across different regions.