• Journal of Environmental Science International
• /
• v.4 no.5
• /
• pp.157-157
• /
• 1995

In order to analyze the sex-linked lethal mutagenic effects of ethyl methanesulfonate (EMS) in Drosophila melanogaster, the mutagenicities from the attached-X and Basc method have been detected. The indexes of relative lethal mutations at 2.0 and 4.0mM EMS treated group using the attached-X method were about 1.5 and 2.4 times than that of 1.0mM treated group, respectively. EMS had more pronounced effect in the sperm and spermatid stages in the induction of X-linked lethal mutations during the spermatogenesis. And, in the induction of X-linked recessive lethal mutations from the Basc method, the mutation frequency of 4.0mM EMS treated group as compared with 2.0mM was more than three fold. Two assay systems used in this study can support mutually according to experimental purposes, and the area of its application can be considerably wide.

• Journal of Environmental Science International
• /
• v.4 no.5
• /
• pp.543-549
• /
• 1995

In order to analyze the sex-linked lethal mutagenic effects of ethyl methanesulfonate (EMS) in Drosophila melanogaster, the mutagenicities from the attached-X and Basc method have been detected. The indexes of relative lethal mutations at 2.0 and 4.0mM EMS treated group using the attached-X method were about 1.5 and 2.4 times than that of 1.0mM treated group, respectively. EMS had more pronounced effect in the sperm and spermatid stages in the induction of X-linked lethal mutations during the spermatogenesis. And, in the induction of X-linked recessive lethal mutations from the Basc method, the mutation frequency of 4.0mM EMS treated group as compared with 2.0mM was more than three fold. Two assay systems used in this study can support mutually according to experimental purposes, and the area of its application can be considerably wide.

• Anxiety and mood
• /
• v.15 no.2
• /
• pp.101-108
• /
• 2019

Objective : This study aimed to investigate the associations of anxiety symptoms with behavior and attention in elementary school children with attention-deficit/hyperactivity disorder (ADHD). Methods : A total of 195 elementary school children with ADHD participated in the study. The Korean Version of ADHD Rating Scale (K-ARS) and Behavior Assessment System for Children(BASC-2) were used to measure the children's behavior. Anxiety and attention was assessed with State-Trait Anxiety Inventory for Children (STAIC) and ADHD Diagnostic System (ADS), respectively. Children with ADHD were categorized to two groups of ADHD with low anxiety (ADHD-LA) and ADHD with high anxiety (ADHD-HA) according to the total STAIC scores. Scores on K-ARS, BASC-2 and ADS were compared between two groups of ADHD-LA and ADHD-HA. Results : The Scores on K-ARS total and both subscales in ADHD-HA group were significantly higher than ADHD-LA group. Scores on the BASC-2 subscales including hyperactivity, aggression, conduct problem, anxiety, depression, somatization, withdrawal, attention problems were also significantly higher in ADHD-HA group compared to ADHD-LA group. In contrary, scores on ADS subscales were not significantly different between the both groups. Conclusion : Our study identified that the anxiety accompanied with ADHD was associated with the negative behavioral aspect in children with ADHD. However, the performances on attention task were not affected by the anxiety comorbid with ADHD. Future studies to reveal underlying mechanism are needed for further understanding the association with anxiety and ADHD.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
• /
• v.21 no.1
• /
• pp.37-44
• /
• 2010

Objectives ： The purpose of this study was to evaluate gender differences with respect to the internalization or externalization of symptoms according to the amount of time spent engaged in extracurricular education. Methods ： The study included a community sample of 755 boys and girls (mean age, 6.6 years), collected from five elementary schools in Gunpo, South Korea. Primary caregivers completed a questionnaire which included information on demographics, the amounts of time children spent in extracurricular education and with other activities, and an adapted form of the Behavior Assessment System for Children (BASC-2). Gender differences regarding externalizing and internalizing behavior problems were examined according to extracurricular education. Results ： With respect to the boys, there was a difference in the frequency of those who had externalizing behavior problems according to their time spent in extracurricular education. In contrast, the girls exhibited no difference. With respect to those children who spent a lot of time engaged in extracurricular education, there was a gender-specific difference only with respect to externalizing behavior problems. Conclusion ： A gender-specific difference exists only in terms of externalizing behavior problems according to time spent engaged in extracurricular education.

• Child Health Nursing Research
• /
• v.19 no.2
• /
• pp.140-148
• /
• 2013

Purpose: The aim of this study was to explore the relationship of being from low-income families on children's behavior problems and obesity. Methods: The research design was a descriptive survey study, and the participants were 197 children from low-income families who took part in activities at a local children's center. They were selected through convenience sampling. The participants completed a questionnaire, BASC-2 (Behavior Assessment System for Children). Results: The results are as follows: 22.3% had obesity, a rate higher than that of children in general. Further, 37.3% had attention deficit problems, 33.8% had problems adapting to school and 49% had other adaption problem. There was a gender-specific difference with respect to all of the behavior problems. Conclusion: The results of this study indicate a lack of an identified child policy for behavior problems and health, and suggest a need for various programs and policies which could lead to development of behavior screening programs for children from low-income families.