• Journal of the East Asian Society of Dietary Life
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• v.15 no.1
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• pp.1-10
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• 2005

Dietary behavior, body mass index(BMI) and nutrient intake status of 185 boys and 205 girls in 3rd grade middle school students in Daegu area were analyzed. Boys were 168.6cm tall and weighed 61.3kg on the average and girls 158.5cm and 54.4kg, respectively. From their BMIs, 17.9% were classified as the underweight, 54.2% as the average, 14.7% as the overweight and 13.2% as the obesity. The average energy intake per day was 2222.6 kcal for boys, 1796.2 kcal for girls which were 83.3% and 86.6% of the RDA, respectively. Composition rate of carbohydrate, protein, fat in relation to energy intake was 62.4 : 16.5 : 21.1 for boys and 58.8 : 16.0 : 25.2 for girls. Protein was taken low and carbohydrate and fat were high in this study. Particularly, fat intake rate of girls was high. Calcium, iron, vitamin A, and vitamin B2 did not meet the RDA and especially calcium was taken 63.9% for boys and 54.01 % for girls. Most of the students have tendency to eat irregularly and to overeat. For the nutrients intake, calories and calcium intake were lower than the RDA regardless of gender and iron intake was not enough for girls only. In relation to BMI, obesity group students were taking lower calories and proteins than the normal students were. No consistent trend was shown for boys about nutrient intake in relation to eating speed. Students had a correct perception of their body image which was similar to that of their mothers. Nutrient average intake is under the average and the percentile under 70% of RDA was high contrary to the fact that nutrient intake like calcium and iron was exceedingly important particularly in the growth process. Therefore, nutritional education for the proper intake of nutrients was required for the students in Daegu area. Especially, education has to be focused on the balanced diet and correct food choices for the proper dietary behaviors.

• Journal of The Korean Association For Science Education
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• v.27 no.3
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• pp.201-211
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• 2007

The purposes of this study were to examine trends in Korean middle school students' attitudes toward science and the differences in boys' and girls' attitudes toward science as well as to analyze Korean middle school students' attitudes toward science compared to those in Singapore, Chinese-Taipei, Hong Kong, and Japan. In order to achieve these purposes, we analyzed students' survey data on self-confidence in science, interests in science, external motivation for science, and career preference for science collected from TIMSS 1995, TIMSS 1999, and TIMSS 2003. Korean students' interests in science and external motivation for science reduced in TIMSS 1999 and increased again in TIMSS 2003. The amount of change was greater in interests in science. On the other hand, self-confidence in science and career preference for science consistently declined from TIMSS 1995 to TIMSS 2003. Self-confidence in science among boys and girls was similar in TIMSS 1995 and 1999. But self-confidence of girls in science declined rapidly from TIMSS 1999 to 2003, while self-confidence of boys in science remained almost the same. Trends of interests in science were similar between boys and girls; they declined in TIMSS 1999 and increased again in TIMSS 2003. External motivation for science of both boys and girls increased, and the increase among girls was greater. The percentage of boys who wanted to have a job using science consistently declined from TIMSS 1999 to TIMSS 2003, while the percentage of girls declined in TIMSS 1999 and increased in TIMSS 2003 again. The results from an international comparison with other Asian countries having similar cultures showed that Korean students' self-confidence in science, career preference for science of middle school students was the lowest.

• Research in Community and Public Health Nursing
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• v.9 no.2
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• pp.467-481
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• 1998

The purpose of this survey, in which 2754 students from 35 middle schools from Taegu city participated, was to identify the degree and the relationship of sexual knowledge, sexual attitude and need for sex education. This information will provide useful data, and promote a more systematic, desirable and practical sex education. The data was collected from September 1 to November 8, 1997. Data was analyzed using the statistical computer package, SPSS to manipulate the data along with percentage, mean, $X^2$-test. t-test, F-test and Pearson correlation coefficient. The results from this study were summarized as follows: 1. The mean score of sex related knowledge showed significant differences between boys and girls in general knowledge(boys: 10.85 girls: 11.71, p=0.000), in the area of physical development(boys : 5.29 girls: 5.72, p=0.000), pregnancy & physiology (boys: 3.23 girls: 3.57, p=0.000) and venereal disease (boys: 2.33 girls: 2.42, p=0.000). 2. The mean score of sex related attitudes showed a significant differences between boys and girls on the whole(boys : 57.68 girls: 58.92, p=0.000), in the area of psychological differences of the other sex (boy: 26.13, girls: 28.08, p=0.000), and sexual delinquency and its prevention(boy: 14.28, girls: 13.68, p=0.000). However, in the area of other sex friendships (boy: 17.28, girls: 17.16, p=0.274). There were no significant differences between boys and girls. 3. Those who had a higher sex related knowledge score showed more positive attitudes towards sex, but was of no statistical significance(r= 0.312, p=0.000). 4. The majority of subjects wanted to learn about friendship with the other sex(40.1%), about physical and psychological differences in adolescence(24.0%), about prevention of sexual violence(15.0%), about pregnancy and delivery (7.5%), about venereal disease and medical cures(7.3%), about contraception methods (4.3%), as well as other aspects of sexual knowledge (1.8%), 5. The mean score of sex related knowledge generally was higher when one paid a lot of attention to health (F= 3. 148, p=0.014), when one's father was alive(t=3.930, p=0.000), and when one's mother was alive(t=2.807, p=0.005), Hobby activities also showed a significant difference(F=9.092, p=0.000). The mean score of sex related knowledge generally according higher when one had sex education(F=9.470, p=0.000), when one obtained sexual knowledges from a teacher (F = 5. 742, p=0.000), and when one had middle grade problems with sex(F=13.58 4, p=0.000). 6. The mean score of sex related attitudes generally showed significant differences when re ligion(F=2.691, p=0.03), hobbies (F= 3.499, p= 0.002) were considered. Those who had a father also had higher scores(t=2.538, p= 0.011). The mean score of sex related attitudes generally with respect to a subject's sex was higher when one had sex education(t=5.338, p= 0.000), when one had high grade problems with sex(F=6.023, p=0.002), and when one had the experience of friendship with the other sex(t= 8.106, p=0.000), The following suggestions are based on the above results, 1. Systematic sex education must be performed in middle schools in order to establish responsible attitudes toward sex, 2. Sexual knowledge, attitude, and general sex education classes must be performed seperately for early, middle, and late adolescents, In other words sex education programs are needed for each adolescent development stage.

• Journal of Gifted/Talented Education
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• v.26 no.2
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• pp.319-346
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• 2016

In this study, by examining the characteristics of boys and girls which would appear in the performance process of Goldberg machine activities, it would be attempted to provide the implications for the development and teaching methods of gifted and talented programs. The object of study was organized into separate 2 groups of boys and girls by each, composed of a total of 16 people among 5th graders of the gifted class in elementary school, located in Gyeonggi province. The final assignment was to make the Goldberg machine in order to have the beads get to the target spot latest, in which the analysis was implemented qualitatively by participating in and observing the performance process of students. After dividing the Goldberg machine activities into the steps of planning, production, outcome, assessment and reflection, their analysis results are as follows: First, in the planning stage, the girls explained minutely the process of Goldberg machine in writing, whereas the boys represented it visually simply. Second, in the production stage, the boys showed the task commitment by trying to realize the machine as designed initially, but the girls showed their appearance to represent it simply and easily. Third, in the sophistication and efficiency of the machine production, the boys were superior to the girls, and in the creativity and diversity of the use of materials, the girls were more excellent. Fourth, in the assessment and reflection, the boys evaluated it individually, and the girls showed their appearance to evaluate it by reflecting others'thinking. Hence, when developing and teaching the gifted and talented programs, it would be required that the teaching and learning contents be recomposed by considering the gender, or that the various class strategies be sought. Further, the broader and more systematic studies, on the performance process of gifted students based on the gender, should be carried out.

• Journal of Nutrition and Health
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• v.27 no.5
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• pp.460-472
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• 1994

Prevalences of hypertension and obesity of primary school children in Kangnung were investigated, and the correlations between blood perssure and measured anthropometry were also studied to identify the factors that influence on blood pressure. 1,164 children (602 boys and 562 girls) from five elementary schools were chosen for this study. Anthropometric measurements were taken for blood pressure, body weight, height, triceps skinfold, and circumferences of chest and arm. Data of family history of hypertension were obtained by means of prepared questionnaires. Prevalences of hypertension were 3.3% in boys and 3.1% in girls. The group with elevated blood pressure had relatively a greater frequency of familial hypertension and significantly higher mean body weight and obesity index. The prevalence of obesity was defined as percentage of children whose rates of current weight to standard weight for height and sex in Korean children were more than 120%. Prevalence of obesity were 16.3% in boys, 10.3% in girls. There findings clearly revealed the influences of above-average weight and familial hypertension on blood pressure. These results suggest that children with familial hypertension should be avoid excess adiposity and be measured blood pressure regularly.

• Korean Journal of Child Studies
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• v.24 no.2
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• pp.79-92
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• 2003

Data were collected from teacher reports and from 529 1st to 6th grade students through questionnaires. Bullying was higher among boys than girls. Victimization was higher in 2nd, 3rd, 4th and 6th grade boys than girls. Acting out was highest in 2nd graders and lowest in 3rd graders. Shy-anxiousness was highest in 4th and 6th graders and lowest in 1st and 3rd graders. Learning problems were lowest among 3rd graders. Competencies were higher in 1st and 2nd grades. Boys had more problem behaviors; girls showed better competencies. Bullying was positively related to acting out, and negatively related to frustration tolerance and task orientation. Victimization was positively related to shy-anxiousness and learning problems, and negatively related to frustration tolerance, assertive social skills and task orientation.

• Korean Journal of Child Studies
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• v.29 no.5
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• pp.65-78
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• 2008

This study examined whether parental psychological control influences adolescents' depressive feelings through personality features of dependency and self-criticism. Participants were 315 high school students (M=16 years) who completed questionnaires tapping two types of parental psychological control and student personality and depressive symptoms. Both girls and boys perceived equal levels of maternal and paternal separation-anxious psychological control. Boys perceived higher achievement- oriented psychological control of fathers than mothers; girls perceived equal levels of maternal and paternal achievement-oriented control. Structural relations between types of psychological control, personality features, and depressive symptoms were equivalent for both mothers and fathers and for both boys and girls. Results confirmed that separation-anxious and achievement-oriented control have negative effects on adolescents' adjustment through differential pathways; dependency and self-criticism, respectively.

• Korean Journal of Child Studies
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• v.26 no.2
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• pp.55-74
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• 2005

This study investigated the effects of children's temperament and environmental factors on boys' and girls' noncompliance in ecological context. Observations were made of 62 children(34 boys and 28 girls, $\bar{x}$= 44 months) enrolled in child-care centers. Mothers and caregivers completed questionnaires. Data were analyzed by t-test, Pearson's Correlation, and three way ANOVA. Results showed no significant gender difference in noncompliance. There were correlations between children's activity level, maternal rejection and responsiveness, quantity of child-care and boys' noncompliance. For girls, only activity level and quantity of child-care were related to noncompliance. The effects of maternal child-rearing behavior and child-care variables on noncompliance varied by children's gender and temperament.

• Journal of Families and Better Life
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• v.22 no.4
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• pp.115-126
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• 2004

The purpose of this study was to examine the relationships among parents' marital conflict perceived by school-aged children, children's aggression, and peer harassment six hundred thirty seven 5th and 6th graders (306 girls and 331 boys) participated in this study. Each participant completed a children's perception of parental conflict scale, a children's aggression scale, and a peer harassment scale. Major findings of this study are as follows: 1) In terms of physical harassment, boys were bullied and victimized more than girls. 2) Children's aggression was positively related to the physical and relational peer harassment. Parents' marital conflict was positively related to children's aggression. There was a statistically significant relationship between parents marital conflict and physical and relational peer harassment. 3) Parents' marital conflict and children's aggression influenced physical and relational harassment for both boys and girls.

• Korean Journal of Child Studies
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• v.28 no.1
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• pp.129-145
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• 2007

The short form of the Early Adolescent Temperament Questionnaire-Revised(Ellis & Rothbart, 1999) was translated into Korean for Korean(N=367) and Korean-Chinese(N=258) children and into Chinese for Chinese-Korean(N=232) and Chinese(N=211) children. This 43 item scale of self-ratings was administered to 4th graders by home-room teachers in China and in Korea. Korean-Chinese children rated themselves higher on affiliation, depression, fear, pleasure- and perceptual - sensitivity and shyness than other groups. Chinese-Korean children were higher on affiliation, aggression and frustration, Chinese children were higher on activation control and Korean children rated themselves lowest on all subscales. Korean girls were higher than boys on activation control and affiliation. Korean boys were higher than girls on pleasure sensitivity. Chinese boys were higher than girls on aggression.