• Journal of Music and Human Behavior
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• v.1 no.1
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• pp.47-71
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• 2004

Students with learning disability have difficulty with attention and academic achievement Music can be an effective tool to enhance level of participation. The purpose of this study is to examine how much can be structured to enhance the attention span and related academic skills needed to achieve educational goals. The study has implemented structured music therapy sessions for three middle school students with learning disability. They participated in 20 sessions which were 30 minutes in length for ten weeks. The implemented music therapy sessions were designed using songs, playing, and listening to music. In order to test their level of attention, Frankfurter Aufmerksamkeits-Inventar(FAIR) Attention Test is implemented and Conners' Comprehensive Teacher's Rating Scale(CTRS-10) are used on the week before and after music activities. Also videotaping is used so as to analyze how correctly they do their task and how the correctness is changed period by period and to evaluate how often for ten minutes they make an eye contact with their teacher. The conclusions of this study are as follows: Firstly, the organized music activities have a positive affection on improving the attention of three middle school students who have learning disabilities. Fair Attention Test shows that they can do their task with more accuracy than in the previous period. Secondly, three students of this study improved their attention and made an eye contact more often than before this study, which is revealed through the analysis of the pre and post test results evaluated by CTRS-10. The results of the study indicate that structured use of music in various level of activities can help students to enhance attention span and the related academic skills.

• Journal of Korean Home Economics Education Association
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• v.11 no.2
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• pp.89-110
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• 1999

The purpose of this study was to investigate the perception and eating behaviors of middle school students in Kwangju area about food and nutrition section of Home Economics course. The subjects were 480 middle school students. The major results were as follows： On the perception f food and nutrition section, the 1st graders learned ‘how to settle the problems related to food and nutrition and food choices’. The 2nd graders learned ‘the knowledge and principle of food and nutrition for improving dietary life’. The 3rd graders learned ‘actual dietary life functions like arranging menu and preparing meals’. Consequently, there was a significant difference in each grade and all boy and girl students have the highest response to the item ‘they learn how to settle the nutrition problem and foods choices’. On the interests in food and nutrition section, lower graders and girl students have higher interest than hgiher graders and boy students. The area which was considered as most interesting in food and nutrition sections was ‘cooking’ in all students. The perception of the concern on dietary life after learning food and nutrition section was higher in the 1st graders. On the perception of the area where was a great change in their own dietary life after learning food and nutrition section, the 1st graders responded there was a great change in ‘balanced dietary life’, the 2nd graders in ‘eating habit and nutrition of adolescence’and the 3rd graders in ‘cooking’. Especially, girl students showed more changes. On the perception of degree which food and nutrition section gives a help to actual life, students over 50% responded that it was helpful to their actual life. This showed that the lower the grades, the more help it gave to those students. On the perception of mother’s job, the students with working mother considered that they learned ‘actual dietary life functions like functions like arranging menu and preparing meals’from the food and nutrition section. In addition, they had high interests in the area of ‘cooking’. It was recognized that as the family size was greater, the food and nutrition section gave more helps to actual life. On eating behaviors of breakfast, the higher the grade, the more frequent they don’t have breakfast, boy students have more frequencies of having breakfast than girl students and the primary reason of not having breakfast is poor appetite. On whether going without a meal affects study or not, most of the 1st, 2nd and 3rd graders whether they are boys and girls or not responded it affected their study. On eating behaviors of lunch, most of boy and girl students in the 1st, 2nd 3rd grade have lunch box. On eating behaviors of supper, eating time is usually between 7：00 and 8：00 p.m and eating hour is mostly 10 or 15 minutes. On eating behaviors between meals, frequency of eating between meals is mostly once or twice a day and girl students have more frequencies of eating between meals, and the cause was hunger commonly in boy and girl students and ‘killing time’in girl students. The focus in getting the foods is ‘taste’and favorite food is fruit regardless of the grade.

• Korean Journal of Culture and Social Issue
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• v.11 no.4
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• pp.45-66
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• 2005

This study verified the effects of violent PC games and aggressive personality on aggressive behavior and aggressive intention as predicted by GAM in Anderson and Bushman (2002), and a correlational study and experimental research were carried out to corroborate a differences of the effects of the two variables according to the developmental levels. The correlational study showed that aggressive personality was an explanatory variable for aggressive behavior; however, exposure to violent PC games was not a significant factor, contrary to the predictions by GAM. It has been clarified that the effects of the two variables influenced aggressive behavior in a different way according to the developmental levels. Further, no positive relation existed between repetitive (chronic) violent PC game plays and aggressive personality. The experimental research analyzed the differences of aggressive intention in each of the experimental conditions designed with a 2(PC games types: violent vs. non-violent) x 2(aggressive personality: high vs. low) x 2 (developmental levels: middle school boys and college students) between-subjects factorial design. As a result, violent PC games had an effect on aggressive intention for the middle school boy group, while it was supported that aggressive personality had an effect on aggressive intention for both middle school and college students. Noticeably, the primary hypothesis in the study has been supported that the effects of violent PC games and aggressive personality on aggressive intention vary according to different age groups. In conclusion, the effects of violent PC games and aggressive personality as predicted by GAM have been confirmed in parts; however, future studies on GAM must be necessarily supplemented with the developmental perspectives, as it has been ascertained that the effects of the variables vary according to the developmental levels.

• Journal of The Korean Association For Science Education
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• v.26 no.1
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• pp.99-113
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• 2006

In this study, Korean middle school student science achievement results in the "Trends in International Mathematics and Science Study" (TIMSS 2003) were analyzed according to international benchmarks, content area, gender and student attitudes toward science. Overall Korea ranked the third internationally and had a mean score of 558. Korean students achieved top ranking in physics, but fell to the ninth place in chemistry. Unliked their counter parts in similar countries such as Singapore and Chinese Taipei, Korean students did not reach the highest benchmark. Compared to previous assessment, Korean girls showed improved performance; however, significant gender differences still exist in Korea; apparent from the better performance of boys than girls in the study. It is also noteworthy that Korean students were found to have the lowest self-confidence in learning science, a lower valuing science, and less enjoying learning science even though they produced high achievement scores.

• Child Health Nursing Research
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• v.5 no.2
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• pp.211-234
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• 1999

The purpose of this article was to get hold of adolescent's needs for sex knowledge and to reveal their understanding of sex. These results may be applied to the sex education and counselling for adolescent. The participants of study were 267 students (females, 144 ; males, 123) who were the first and second grade form 1 middle and 2 high schools. They were asked to describe 3 questions that they wanted to know or to learn about sex. Their questions about sex were total 779(girls, subtotal 456, mean 3.2, boys, subtotal 323, mean, 2.6). These questions categorized to 9 items by content analysis. The items were ‘sexual drive, behavior and tendency(229, 29.4%)’ , ‘anatomy and physiology of reproductive system(140, 18.0%)’, ‘reproduction(131, 16.8%)’, ‘concept of sex(31, 4.0%)’, ‘acquaintance between the other sexes(17, 2.2%)’, and ‘the others(9, 1.2%)’ in order of frequency. The most frequent item that the student want to know or team about sex was ‘sexual drive, behavior and tendency’ except girls of sophomore in middle school. There were several features in participants' needs for sex knowledge as respects of the understanding of sex- biological sex, gender, and sexuality. The prominent feature in knowledge need of bio logical sex was that the participants had the interests according to their biological sex. They had the negative attitude to the phenomenons (ex, menstruation and pregnancy, phimosiectomy, etc) that they experienced or would experience due to their biological sex. A part of them asked the questions based the misconceptions and used the slangs or ‘××’, ect. to name the male or female genitalia. The male students wanted to know the female genitalia. The participants' understanding of gender reflected the sexism of our society, but they didn't accept and had doubts about the dual, hierarchical structure of that. The students, especially female seemed to be powerless to the harms of the sexual violence. Girls had much interest in their appearances and complained to our sexual culture that women comforted and served men. The participants had the dual perspective that the sexuality as respects of physiologic phenomenon was considered as natural but that as related to heterosexuals was as negative. And they deemed that men's sexual drive was stronger than women's and was difficult or was not able to be inhibited. They had much interests in homosexuality but reflected the negative attitude to that in our society. Adolescent felt wonder why the expressions of sexuality of adult were permitted but theirs were not. Lastly, a part of boys substituted querying the sexuality of animals for asking that of human. Maybe it was because of the embarrassment to talk about human's sexuality directly. The teenaged participants understood that the sex had not only the biological meanings but also the sociocultural meanings. They regarded the sex as natural and wanted to know it, but they had conceptions that it was difficult and embarrass to talk about it openly and directly.

• Journal of the Korean Dietetic Association
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• v.13 no.1
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• pp.61-72
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• 2007

In order to study milk preference and intake pattern of adolescents, the questionnaire survey was conducted with 929 middle and high school students residing in Chungnam cities through October and November 2004. Of the subjects, 56.3% liked milk or liked very much. They preferred chocolate and fruit-tasted milk to plain milk. Reasons for liking milk were for health and its taste, while the reasons of disliking were unpleasant smell and stomach upset. However those who disliked milk did like milk products such as ice-cream, yogurt or cheese. Of the students 35.1% drank milk 2 times or more a day, while 11.8% drank milk less than 2-3 times a month. As a whole they drank milk 8.6$\pm$6.7 times a week, of which 4.3$\pm$3.1 times for plain milk. Daily intake amount was estimated as 308$\pm$315mL. Middle-school students and boys drank more milk than high-school students and girls, respectively. Among the students 64.3% used to drink 1 cup of milk at a time, and 58.3% drank only milk without other foods. It was shown that 51.8% took milk school-serviced and their milk intake frequencies were higher than those of who were not given school milk service. Also milk intake frequencies was higher in students whose mother were housewives than in students whose mother had jobs. Milk preference, intake frequency, and one portion size showed significant and positive correlations each other. In conclusion, milk intake level of the subjects was insufficient and unpleasant smell and stomach upset were the main reasons which decreased milk preference and consumption. Students with low milk preference should be guided with how to drink milk deliciously, how to choose milk type and its products. It is also effective to go into school milk service and to provide milk at home anytime. As students like much fruit-tasted and chocolate milk, the milk processing industries should take their nutritional and health benefits into considerations importantly.

• Journal of Labour Economics
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• v.37 no.2
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• pp.79-103
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• 2014

Previous studies show that tall people have better labor market outcomes, but controlling for their abilities reduces the size of height effects. This implies that a failure to properly control for one's ability could overestimate the OLS estimate. This paper contributes to the literature by being the first to control for individual fixed effects (FE) and to examine height effects on the probability of one's attaining a leadership position. The data used are panel data of a cohort obtained during the cohort's middle and high school years. In OLS estimation, this paper finds positive height effects for boys. However, when controlling for individual fixed effects, the estimate is not statistically significant. For girls, the height effects are found on neither OLS nor FE model.

• Korean Journal of Human Ecology
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• v.16 no.1
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• pp.39-47
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• 2007

The purpose of this study was to clarify how sexual values and sexual knowledge may be related to ego-identity of adolescents. The subjects were 303 adolescents who attended middle or high school in Seoul and KeoungGi province. The survey was based on questionnaires completed by 146 boys and 157 girls. Statistical techniques were t-test, Pearson's correlation, simple regression, hierarchical regression. The results of this were as follows. (1) Boy and girl adolescents' sexual values was associated positively with ego -identity. (2) Boy and girl adolescents' sexual knowledge was associated positively with ego-identity. (3) Boy adolescents' sexual values and knowledge exerted direct effects on ego -identity. But girl adolescents' sexual knowledge exerted indirect effects on ego -identity mediated by sexual values.

• Korean Journal of Child Studies
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• v.34 no.5
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• pp.127-144
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• 2013

The purpose of this study was (1) to examine the impact of chronic diseases on adolescent's peer relationships, and (2) to investigate the mediating effect of self-perceived health status and resilience on the relationship between their physical health states and peer relationships. The authors used the first-wave panel data from 'the Korean Children-Youth Panel Survey'. The sample included 2,351 first-grade of middle school students(boys 50.1%, girls 49.9%). Among the subjects examined 48.11% had chronic diseases. Using maximum likelihood estimation with Amos18(Arbuckle, 2009), SEM software, structural equation modeling was tested. The major findings were as follows : 1. Adolescents' chronic diseases had a negative impact on peer relationships. 2. Self-perceived health status and resilience had a mediating effect. This suggests that self-perceived health status and resilience could be protective factors when it comes to perceive peer relationships more positively for adolescents with chronic diseases. 3. Resilience was directly affected by self-perceived health status. This indicates that positive self-perception about their health status encourages adolescents with chronic diseases to be more resilient and to more positively affect their perception of their relationships with peers.

• Journal of Korean Academy of Nursing
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• v.37 no.1
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• pp.35-43
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• 2007

Purpose: This study was to explore the prevalence of alcohol experiences and to identify the expectancy on the effects of alcohol and alcohol knowledge in early adolescents. Method: The cross-sectional survey of 1854 students from seven middle schools in one district of Seoul was conducted by convenience sampling. Alcohol experience and early onset of alcohol use were measured by the Youth Risk Behavior Survey. Alcohol expectancy was measured by an Alcohol Effects Questionnaire. Result: Over sixty five percent of adolescents reported that they had previous drinking experiences. The participants with no alcohol drinking experience had a lower level of alcohol knowledge than those with experience(t=2.73, p=.007). In expectancy on effects of alcohol, girls had a more positive alcohol expectation than boys(t=-2.54, p=.011). Alcohol knowledge negatively correlated with alcohol expectancy(r=-.40 p=.000). In regression of alcohol expectancy, gender and alcohol knowledge were significant predictors explaining 17%. Conclusion: The results support that alcohol expectancy is an important link with early drinking experiences and alcohol knowledge, focusing on the importance of gender differences. Therefore, an alcohol prevention program in early adolescence is needed and should be focused on multidimensionality of the alcohol expectancy with developmental and psychosocial factors for early adolescents.