Objective:To explore the mediating effect of self-control between smartphone addiction and academic procrastination in medical undergraduates.Methods:A total of 640 medical college undergraduates were selected by convenient sampling method. The self-designed general information questionnaire, smartphone addiction proneness scale (SAPS), brief self-control scale (BSCS) and procrastination assessment scale-students (PASS) were conducted among the students. SPSS 25.0 was used for descriptive statistical analysis, independent sample t test, one-way ANOVA and Pearson correlation analysis. Results:Correlation analysis showed that PASS scores were positively correlated with SAPS scores ( r=0.29, P<0.01), and negatively corrected with BSCS scores ( r=-0.26, P<0.01); the SAPS scores were negatively corrected with BSCS scores ( r=-0.33, P<0.01). Mediating effect analysis showed that the mediating role of self-control between smartphone addiction and academic procrastination were significant (effect size=0.13, 95%CI=0.03-0.26), and the mediating effect accounted for 38.24%. Conclusion:Self-control played partial mediating effect between smartphone addiction and academic procrastination in medical undergraduates. In order to improve the current situation of medical undergraduate's academic procrastination, medical college educators can intervene from the perspective of smartphone addiction and self-control.

Objective To investigate the effects of King's goal theory based flipped class teaching model on medical nursing teaching of upgraded full-time bachelors. Methods Upgraded full-time bachelors were divided into experimental and control group. The experimental group was intervened by King's goal theory based flipped class teaching model, while the control group adopted the traditional teaching model. A general condition questionnaire, SDLRS and CIRN were used to test the two groups. Results The scores of SDLRS and CIRN for experimental group were significantly higher than those of control group. Factors such as professional choice intention , group learning experience , self-directed learning experience and acceptance of teaching methods reform mainly affected self-directed learning readiness , while factors such as professional choice intention, character and self-directed learning experience mainly affected regis-tered nurses competency. Conclusions King's goal theory based flipped class teaching model helps to improve the self-directed learning readiness and registered nurses competency of upgraded full-time bachelors.