• Journal of Digital Convergence
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• v.14 no.12
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• pp.293-302
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• 2016

The study explores how academic strain, unhappiness, and mobile phone dependency among adolescents have changed over time. And we conducted the longitudinal and complex analysis on the influence of academic strain on unhappiness and mobile phone dependency in order to search the ways to prevent a vicious circle among them. We used general strain theory as a conceptual research frame and analysed the data of 1,589 respondents of the 2nd~4th Korean Children and Youth Panel with latent growth modeling. It was found that the levels of academic strain, unhappiness, and mobile phone dependency among adolescents were linearly increased across time. Academic strain initial status positively affected unhappiness initial status and both the initial status and change rate of mobile phone dependency. The change rate of unhappiness positively affected that of mobile phone dependency. Academic strain change rate positively influenced that of mobile phone dependency mediated by unhappiness change rate. We provided useful implications to academic activities, negative emotions, and mobile phone dependency for adolescents and suggested future studies about reasons of the changes of those variables.

• The Journal of the Korea Contents Association
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• v.16 no.4
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• pp.45-55
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• 2016

The purpose of this study was to identify the relation between mobile phone use and visual display terminal syndrome symptom experience in female students from middle school and high school. The convenience sample consisted of 349 female students in four schools. The data were collected from May to June in 2013 using VDTS Subjective Symptom Questionnaire. Descriptive statistics, Kruskal-Wallis test, and Mann-Whitney U test were used to analyze the data using SPSS 21.0. Almost all (96.3%) female students use mobile phone. Among them, 87.7% of the subjects experienced more than one VDTS symptom and the average score was $.39{\pm}.41$ in VDTS symptom experience. Eye related symptom was most experienced and musculoskeletal symptom was the highest in severity among five subdomain of VDTS symptoms. There were significant differences in VDTS symptom scores in accordance with posture, hours of use, and break type during mobile phone use. These findings suggest that the education program for adolescents would be necessary, and the development of checklist would be useful for adolescents to check themselves.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.10a
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• pp.189-190
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• 2017

This study analysis that how related to media use time before shuteye time. Excessive SNS and smatphone use were related to sleepquality and pattern. A positive correlation has been found between the time spent using smartphone before bedtime and sleep deprivation and disability phenomenon. The time spent is found to also affect the language of youths and behavioral violence.

• Journal of Korean Home Economics Education Association
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• v.35 no.4
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• pp.33-45
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• 2023

The purpose of this study is to investigate the association between dietary behavior and related factors according to the generalized anxiety disorder (GAD) in adolescents. The results of analyzing demographic characteristics according to the GAD showed that gender, age, BMI, type of school, residence type, father's nationality, smoking and drinking experience, perceived health status, perception of body shape, economic status, academic achievement, physical activity, sedentary time and smartphone usage time were related to the GAD (p<0.01). The results of analyzing dietary behavior according to the GAD showed that the frequency of water intake, sweetened beverage intake, fast food intake, fruit intake and breakfast intake were related to the GAD (p<0.001). The results of analyzing depression and suicidality according to the GAD showed that depression, suicidal ideation, planning, and attempts were all related to the GAD (p<0.001). Even after adjusting for factors corresponding to demographic characteristics, it was confirmed that the level of GAD had a significant effect on depression and suicidality. This study is significant in that it provided basic data on adolescent mental health problems by analyzing dietary behavior and related factors according to the level of GAD.

• The Journal of the Korea Contents Association
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• v.15 no.12
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• pp.314-325
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• 2015

This study examines the impact of sleep duration on Korean adolescents' suicidal impulse. A gender-based analysis was conducted using binary logistic regression method. The major findings are as follows. First, weekday sleep duration had a significant effect only on male adolescents. Male adolescents who sleep less than seven hours on a weekday are likely to experience suicidal impulse by 1.9 times higher than the others. This effect remained significant even when other relevant variables were controlled. On the other hand, female adolescents who have less than seven hours of sleep on a weekday have about 1.3 times higher chances to experience suicidal impulse. However, this effect became insignificant when other variables such as stress were controlled. Meanwhile, weekend sleep duration did not have any significant effect on both male and female adolescents. By demonstrating the different effects between weekday/weekend sleep duration and male/female adolescents, this study supports the claim that it is necessary to take a social approach in studying sleep duration.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.8
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• pp.3777-3785
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• 2013

This study aimed to find out adolescents' media literacy in terms of reading, writing, and enjoying media or messages. For the purpose, we analyzed the data garnered from 1,036 students enrolled in 5 middle and 5 high schools, respectively. The analyses of the data are summarized as follows: First, mobile phone was most widely used among others, followed by TV, the Internet, mp3 player, computer or video game, radio, a video or DVD in the order. Second, a gender effect was significant in terms of the variety of activities with the Internet, mobile, and SNS: boys were more active in the use of the Internet while girls carried out more activities with a mobile phone and SNS media. Third, high school students showed more critical attitude towards information on the Website than did the middle school students. Fourth, Girls than boys, and high schoolers than middle schoolers, tended to be more active in the production of contents, self-expression, as well as participating in social and political issues online. Fifth, for the enjoyment experiences, time spent for games took up the most of the students' leisure activities, followed by watching TV and the use of the Internet. The findings of the study were discussed in light of media convergence, with implications for developing media literacy education for the youth.

• Journal of Music and Human Behavior
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• v.11 no.2
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• pp.1-18
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• 2014

This study investigated the performance patterns in percussion improvisation of adolescents with behavior problems. A total of 40 middle school students participated in this study. Based on prescreening test results, the participants were assigned to either the impulsive tendency or depressive tendency groups. Both groups received two 45-minute group percussion improvisation. During the improvisation, all playing behaviors were recorded and analyzed in terms of rhythm pattern, instrument selection, intensity, and tempo of performance and performance duration. The results showed that while they were differences in improvised rhythm patterns between the two groups, the groups showed a similar tendencies in their instrument selection. With regard to performance parameters, the two groups showed significant difference in the tempo and duration of performance, but no significant difference was found in terms of intensity. This indicates that adolescents who exhibit behavior problems may be different in their playing patterns depending on their behavioral tendencies. Based on the results, music therapists can have a better understanding of how musical features expressed by this population relate to their inherent emotional and behavioral traits and how therapists should facilitate musical expression of these adolescents to address their needs.

• Journal of Korea Entertainment Industry Association
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• v.13 no.8
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• pp.515-524
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• 2019

The purpose of this study was to investigate the influences of adolescents on self-rated health and happiness, physical activity, and mental health according to time of smartphone use. The researcher used raw data from the Korea youth risk-behavior web-based survey(2017). A total of 64,991 adolescents were enrolled and 54,603 were analyzed in logistic regression analysis. The researcher set gender, self-rated health and happiness, physical activity, and mental health as independent variables and performed logistic regression analysis with smartphone overuse time as dependent variables. As a result, the female had a smartphone overuse of 1.49 to 1.67 times higher than male. Subjectively healthy people were 1.2 to 1.35 times more likely to use smartphones than those who did not(p<.001). People with higher physical activity were higher by 1.17 to 1.18 times than people without physical activity(p<.001). Subjective happiness did not predict smartphone usage(p>.05). People with subjective stress were higher 1.13 to 1.22 times than people without stress, and person with sadness and despair and suicide plan, 1.37 to 1.54 times, 1.17 to 1.24 times than those who did not(p<.001). Depression tended to become more serious as smartphone use increased. These investigation suggest that the self-rated health, physical activity, and mental health excluding self-rated happiness are related to overuse of smartphone.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.396-402
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• 2006

최근 청소년층의 인터넷 이용이 급격히 증가하면서, 초등학생 중 90% 이상이 인터넷을 이용하고 있으며, 그 연령대도 낮아져 저학년 어린이의 이용률이 지속적으로 높아지고 있다. 또한 청소년의 30%가 인터넷 중독 또는 중독 직전에 있는 것이 실태이기도 하다. 10대가 현재 가장 많이 사용하고 있는 정보매체인 컴퓨터는, 그것을 사용함에 있어 교육적으로 도움이 되는 면도 있지만 반면에 무분별한 인터넷 용어나 비속어의 사용, 무절제한 지속적인 이용, 유해사이트에의 노출 등 많은 문제가 산재해 있다. 기존의 유해사이트 차단과 컴퓨터 사용시간 제한 등의 사용 관리를 위한 프로그램들이 많이 선보여진 상태이지만 그 활용 면에서 보면, 좀 더 사용자의 특성을 이해하여 어른들보다 절제가 어려운 어린이 사용자를 위해 부모 혹은 선생님과 같은 관리자와 가르침의 역할을 해줄 수 있는 부분이 더욱 필요하다. 본 연구에서는 무형의 소프트웨어 프로그램이 사용자에게 명령을 내리고 그것을 수행하게 하는 것 보다, 사용자가 친숙하게 받아들이고 정서적으로 접근할 수 있는 사용자와 인터렉션이 가능한 캐릭터 형태의 물리적 아바타를 제안하고자 한다. 또한 비속어나 그와 비슷한 단어들을 사용할 시 의미적으로 비속어인지 아닌지 아바타가 추론할 수 있는 기능으로, 인공지능을 부여하여 사용자가 인터넷 채팅이나 게임을 할때 아바타로 하여금 사용자와의 인터렉션을 통해서 올바르지 않은 언어사용에 대한 인지를 쉽게 하고 개선의 효과를 높이며 지속적인 관심을 이끌 수 있는 인공지능을 가진 캐릭터 아바타를 제안하고자 한다.

• Journal of Digital Convergence
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• v.13 no.7
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• pp.359-366
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• 2015

The media addiction of teenagers became a social problem in the era of media convergence. With the national efforts, parents has limited their children's media usage for proper parenting. However, current media environment where personalized media devices such as smartphone and tablet PC are common raises questions about whether the problems of media addiction can be solved with previous approaches. Thus, this study examines how the parental controls to teens' media usage affect their media usage and emotions. According to the results that analyzed 884 teens' responses, the parental controls did not affect their usage. On the other hand, it was appeared that excessive parental controls stimulated to teens' negative emotions. These results show that parental controls are not longer effective in current media environment, which implies that new efforts from their family or government are required in order to prevent teens' media addiction.