| Summary: | 碩士 === 國立臺灣大學 === 健康政策與管理研究所 === 100 === Objectives: The purpose of this study was to understand the influence of students’ body image and social anxiety to their internet addiction. Methods: Data from “Child and Adolescent Behavior in Long-term Evolution (CABLE) project” from 2007 to 2011 were used for secondary data analysis. Total of 1,820 students were recruited . Group-based Trajectory model and multiple regression were used in the statistical analysis to verify assumptions of the study. Results: 1. There were four changeful patterns of body image from 10th to 11th grade : persistent un-satisfaction group (49.9%), persistent satisfaction group (27.2%), satisfaction to un-satisfaction group (12.0%), and un-satisfaction to satisfaction group (10.9%). 2. There were three developmental trajectory patterns of social anxiety: persistent low group(39.0%), persistent medium group(48.7%), and persistent high group(12.3%) 3. The average score of degree of Internet addiction in sophomore was 11.47. 18.6% in 0 to 4 points, 67.5% in 5 to 18 points, 14.0% in 19 to 30 points. 4. Changeful patterns of body image and trajectory patterns of social anxiety in high school could effectively predict the degree of Internet addiction in sophomore . 5. The developmental trajectory patterns of peer support also significantly influenced the degree of Internet addiction. Conclusion: More than half of students in high school were not satisfied with their body image, it was recommended to teach students the correct awareness and attitudes of body image. Another founding was negative body image significantly affected Internet addiction, it was suggested to teach students who are not satisfied with their body image the correct methods of weight control early. This study also found that social anxiety and peer support also significantly influenced Internet addiction, It was recommended to teach students the social skills, and encourage them to interact with peers.
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