• Journal of the Korean Society of Child Welfare
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• no.32
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• pp.69-97
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• 2010

The purpose of this study is to investigate the effects of high school students' academic problems such as academic stress and low academic achievement on suicidal ideation and the mediating effects of individual-level risk factors (e.g., depression, aggression) and protective factors (self-esteem, emotion regulation) on the relationship between academic problems and suicidal ideation. This study used data of three waves(2005-2007) from the Korea Youth Panel Survey(KYPS). The analyses were conducted on 2,093 academic high school students, who participated in this panel study. The results from structural equation modeling show that academic stress has positive effects on depression and aggression, but negative effect on self-esteem. Low academic achievement has positive effect on aggression but negative effect on self-esteem. Depression and aggression as individual-level risk factors have positive effects on suicidal ideation. In contrast, self-esteem and emotion regulation as individual-level protective factors have negative effects on suicidal ideation. The relationship between academic problems and suicidal ideation is mediated by depression, aggression, and self-esteem. Based on the study findings, practice implications for youth welfare are discussed to screen high-risk youths and to prevent adolescent suicide in advance.

• Korean Journal of Social Welfare Studies
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• v.47 no.3
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• pp.251-277
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• 2016

The purpose of this study was to examine the effects of adolescents' mobile phone dependency on depression and aggression and to identify mediating effects of parenting attitudes and peer relationships. This study used data from the 4th and 5th waves of 2010 KCYPS (Korean Children and Youth Panel Survey). Structural Equation Model(SEM) was conducted to examine the mediating effects of parenting attitudes and peer relationships. The results showed that adolescents' mobile phone dependency had positive effects on depression and aggression. In addition, the relationship between adolescents' mobile phone dependency and depression was partially mediated by parenting attitudes and peer relationships. The relationship between adolescents' mobile phone dependency and aggression was also partially mediated by parenting attitudes and peer relationships. Based on these findings, further suggestions are provided to reduce adolescents' depression and aggression by decreasing mobile phone dependency and improving parenting attitudes and peer relationships.

• Journal of Family Resource Management and Policy Review
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• v.20 no.1
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• pp.1-22
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• 2016

The purpose of this study is to propose measure for the effects of perceived parenting attitudes and emotional problems on life satisfaction among adolescents in single parent families with the parent resource perspective. The study consisted of 230 first grade middle school students from single parent (living with either mother or father only) families in the 4th year panel (2013) of the Korean Children and Youth Panel Survey (KCYPS), National Youth Policy Institute (NYPI). All statistical data analyses were performed using SPSS version 21.0. The findings of this study are as follows. First, lower levels of depression and aggression were found among adolescents who perceived parenting attitude as more affectionate. On the contrary, higher levels of depression and aggression were detected among adolescents who perceived parenting attitude as more intrusiveness. The more the inconsistent parenting practices perceived by adolescents, the higher the degree of depression. Second, a higher level of life satisfaction was found among adolescent who were more likely to perceive positive parenting attitudes including monitoring, affection and reasoning. However, there was no significant correlation between negative parenting behavior and life satisfaction. Third, a lower level of life satisfaction was observed among adolescent who were more likely to perceive emotional problems such as depression, aggression and social withdrawal. Fourth, according to the analysis on the effects of parenting attitudes and emotional problems on life satisfaction, affection parenting of all positive parenting styles and depression among emotional problems had an impact on life satisfaction. The more affectionate a parent is with his/her children in parenting, the lower the degree of depression in adolescents, and the lower degree of depression in adolescents, the higher degree of life satisfaction was found among adolescents from single parent households.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.27 no.1
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• pp.72-81
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• 2016

Objectives: The purpose of this study was to evaluate anti-depressive effects of exercise on child and adolescent and its association with brain derived neurotrophic factor (BDNF). Methods: Twenty nine middle school boys (age $13.3{\pm}0.7$) were divided into two groups, 15 boys for control group and 14 in the experimental group. The control group participated in a regular exercise program, 3 times a week for 15 weeks. During the same period, the experimental group participated in an aerobic exercise program specifically designed to enhance anti-depressive effect of exercise. Serum BDNF level and its performance of each group on the Beck Depression Index (BDI), Children's Depression Inventory (CDI), Screen for Child Anxiety Related Emotional Disorders (SCARED), Aggression Questionnaire (AK-Q), and Stroop task were compared before and after the exercise program. Results: Scores of BDI, CDI, SCARED, and AK-Q were significantly lower in both groups after the exercise programs compared to those before the programs. The Stroop task performances were significantly improved after the programs. However, there were no significant differences between two exercise programs, except SCARED separation anxiety, AK-Q physical, and verbal aggression scores. Also, no association was found between serum BDNF level and anti-depressive effects of exercise. Conclusion: Our preliminary results suggest a possible effect of exercise on depression, anxiety, aggression, and cognition of child and adolescents.

• Korean Journal of Psychosomatic Medicine
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• v.23 no.2
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• pp.86-92
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• 2015

Objectives : The aim of this study was to investigate the gender differences of direct aggression and relational aggression in Korean elementary and middle school students. Methods : Parents of 946 elementary school students(age $9.54{\pm}1.72$ years, 485 boys, 461 girls) completed the Child Behavior Checklist(CBCL). Six-hundred-and-three middle school students(age $13.98{\pm}0.93$ years, 301 boys, 302 girls) completed the Youth Self-Report(YSR). Independent t-test, chi-square test, and Fisher's exact test were used. Results : Boys had significantly higher direct aggression scores than girls in elementary school students(p<0.001). There was no significance gender difference of relational aggression in elementary school students(p=0.235). In middle school students, boys had significantly higher direct aggression than girls(p=0.017), and girls had significantly higher relational aggression compared to the boys(p<0.001). Conclusions : Our results suggest the presence of gender differences in manifestation of aggression subtypes in Korean elementary and middle school students. These gender differences should be taken into account in prevention and intervention approaches of aggression in children and adolescents.

• The Journal of the Korea Contents Association
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• v.17 no.8
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• pp.597-609
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• 2017

The aim of this study is to identify factors that the victimization by family violence has influence on peer violence perpetration through the mediation of anxiety and aggression in out-of-school youths. Subjects consist of 169 out-of-school youths in Chungbuk and data are analyzed by regression analysis with 18.0 version. The findings of this study are as follows. First, the victimization by family violence has positive influence on peer violence perpetration. Second, when the mediating effect of anxiety and aggression is tested, aggression only plays a mediating role between family violence victimization and peer violence behavior. On the basis of the results, this study suggest that we make efforts such as prompt intervention for out-of-school youths and their's family after school dropout, the reinforcement of family relationship, family function and youth competency, and the transition of social perception regarding out-of-school youths to decrease family and peer violence.

• Survey Research
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• v.8 no.2
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• pp.21-42
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• 2007

In the present study, we studied the change patterns of adolescents' overt aggression during the middle school 2nd to the high school 1st grades and the effects of ecological factors on the change. For the research goals, we applied multi-level models to the Korean Youth Panel data. Results showed that adolescents' overt aggression decreased significantly during the period. Gender(males recoded as 1) and self-control had negative effects on the initial status(middle school 2nd grade) while the number of delinquency peers had a positive effect. On the other hand, gender and self-control showed positive effects on the change rate. The major strengths of the research are the study of various ecological factors and the longitudinal design. Few studies of adolescents' aggression have incorporated these methodological and substantive characteristics.

• Human Ecology Research
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• v.51 no.4
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• pp.371-382
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• 2013

The purpose of this study is to investigate children's emotional problems (attention problem, aggression, somatic symptom, social withdrawal, depression) and to examine the relationship between children's emotional problems with family characteristics (parent education, parent job, family income), life-styles (gaming times, TV times, sleep time). The sample was 2,140 collections of second grade children and their parents who participated in Korea Youth Panel Survey on 2011. We analyzed the data which were collected by means of questionnaires and the data were analyzed with t -test, ANOVA, Pearson correlation analysis, and regression analysis with SPSS ver. 19.0. The results were summarized as follows. The level of children's emotional problem was relatively low on average. There is a significant difference in the children's emotional problems according to family characteristics and life-styles. There was a relationship between children's emotional problems (attention problem, aggression, somatic symptom, social withdrawal, depression) and life-styles (gaming times, TV times). The significant factors influencing the children's emotional problems are connected with father's education, mother's job, family income, family characteristics, gaming time and TV time of life style. It is noted that parent education level was an important factor for children's attention problem and aggression. Amongst children's life-styles, gaming time and TV time are negative factors for social withdrawal and depression.

• Korean Journal of Child Studies
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• v.28 no.2
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• pp.217-233
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• 2007

The present study investigated the effects of individual, family, school, and community factors on the onset of adolescent runaway behavior. Using the Korean Youth Panel data(n=3,118), discrete-time survival analysis was applied for research purposes. Results showed that the likelihood of onset of adolescent runaway behavior increased sharply during the early middle school years. The variables of self-control, aggression, parents' divorce, paternal abuse, attachment with parents, and number of delinquent peers were associated with the likelihood of runaway behavior. These results suggest that special attention should be paid to adolescents in the early middle school years and that various preventive programs, e.g., aggression and stress management, and peer relations programs, should be developed and implemented.

• Journal of Korea Entertainment Industry Association
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• v.15 no.6
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• pp.193-203
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• 2021

The purpose of this study was to invest the mediating effect of the mobile phone addiction and the aggression within the path which the social withdrawal have explained the community spirit of an university student. For the purpose, this study have chosen a total of 1,347 cases as an analysis target from the Korean Youth-Child Pannel Study(KYPS) 7th wave. And this study have used the Structural Equation Modeling(SEM) from AMOS 18.0 as an analysis method. This study have also used sobel test for finding out the effectiveness of the mediating path. This study found these analysis results through the analysis method which this study have suggested. First, this study have verified the effectiveness of the direct path that the social withdrawal predicted the community spirit of an university student. Second, this study have found the effectiveness of the mediating path composed by the mobile phone addiction and the aggression. As these analysis results, this study have proposed the implication for the community spirit of an university student and suggestion for a follow-up study.