• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.33 no.2
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• pp.27-34
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• 2022

Stimulants, such as amphetamine and methylphenidate, are one of the most effective treatment modalities for attention deficit hyperactivity disorder (ADHD) and may cause various movement disorders. This review discusses various movement disorders related to stimulant use in the treatment of ADHD. We reviewed the current knowledge on various movement disorders that may be related to the therapeutic use of stimulants in patients with ADHD. Recent findings suggest that the use of stimulants and the onset/aggravation of tics are more likely to be coincidental. In rare cases, stimulants may cause stereotypies, chorea, and dyskinesia, in addition to tics. Some epidemiological studies have suggested that stimulants used for the treatment of ADHD may cause Parkinson's disease (PD) after adulthood. However, there is still a lack of evidence that the use of stimulants in patients with ADHD may cause PD, and related studies are only in the early stages. As stimulants are one of the most commonly used medications in children and adolescents, close observations and studies are necessary to assess the effects of stimulants on various movement disorders, including tic disorders and Parkinson's disease.

• Korean Journal of Child Studies
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• v.29 no.1
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• pp.133-153
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• 2008

This study examined education and training as variables related to ethical behaviors of child counselors. The four sub-variables of this study included main educational/training background (academic career, major in last degree, and treatment modality), source of education in ethics, experience of educational psychoanalysis, and experience of supervision. The 136 child counselors participating in this study were administered the Inventory for Ethical Behaviors of Child Counselors (Yoo & Kim, 2(06). Data were analyzed by frequency, percentage, average, standard deviation, Cronbach's a, t-test, one way ANOVA, and multiple regression analysis. Results showed that main educational/training background (academic career, major in last degree, and treatment modality), experience of educational psychoanalysis, and experience of supervision were significant variables related to ethical behaviors of child counselors.

• Korean Journal of Child Studies
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• v.20 no.1
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• pp.61-77
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• 1999

This study investigated characteristics of children's coping behaviors in the context of perceived controllability of stress in hassles with parent(s), friend-alienation, friend-conflict, and in learning situations. The subjects were 489 sixth grade children selected from seven elementary schools in Seoul. Statistical analysis was by ANOVA, Scheffe' test, and MANOVA. Major findings were that (1) Active, passive, aggressive, and avoidant coping differed by perceived controllability of stress in all 4 stress situations. The children who perceived a higher level of controllability were more active, and less passive, aggressive, and avoidant in coping with each hassle. (2) Perceived controllability was higher in learning related than in friend-conflict situations. Active, passive, and social support seeking coping behavior was higher in learning related stress situations than in friend-conflict situations. Avoidant coping behavior was lower in learning related than in friend-conflict situations.

• Korean Journal of Child Studies
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• v.22 no.3
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• pp.107-122
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• 2001

The strategies used by 274 $4^{th}$ and $6^{th}$ graders for coping with stress were assessed by the Daily Hassles Coping Scale(Min & Yoo, 1998), and their behavior problems were assayed by their mothers with the Korean version of Achenbach's Child Behavior Check List(Oh, Lee, Hong, & Ha, 1997). Data were analyzed by descriptive statistics, 2-way ANOVA, and hierarchical regressions. Findings were that girls used more passive/avoidant coping strategies than boys; $6^{th}$ graders used more passive/avoidant coping strategies than $4^{th}$ graders; $6^{th}$ grade boys had more internalized behavior problems than $4^{th}$ grade boys; $4^{th}$ grade girls had more internalized behavior problems than $6^{th}$ grade girls; passive/avoidant strategies were positively related to internalized behavior; aggressive strategies were positively related to externalized behavior; strategies of seeking social support were negatively related to both internalized and externalized behavior problems.

• Korean Journal of Child Studies
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• v.25 no.2
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• pp.121-132
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• 2004

In this study of adolescent aggression, the subjects were 320 male and female 7th and 8th grade students in Changwon. Data were collected with questionnaires and analyzed by Pearson's correlation and multiple regression analysis. Results showed that, 1) low friend support, empathy, and prosocial behavior had direct paths to adolescent overt aggression. 2) Low teacher and friend support, empathy, and prosocial behavior had direct paths to adolescent verbal aggression. 3) Low empathy and self-esteem were indirectly related to adolescent aggression through low prosocial behavior. 4) Low teacher support was indirectly related to adolescent aggression through low empathy and self-esteem. 5) Low friend support was indirectly related to adolescent aggression through low self-esteem.

• Journal of Information Technology Applications and Management
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• v.21 no.4
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• pp.247-261
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• 2014

Trust and perceived usefulness have been variables frequently used by IS researchers to explain consumers' online transaction intention. A group of prior studies have incorporated the two variables simultaneously to build better models to capture the phenomenon. However, the studies have largely ignored the role of trust by replacing trust with trustworthiness. The purpose of this study is to fill this gap. To do this, the study conceptualizes and tests relationships between trust, perceived usefulness and related variables. Based on the study results, the study discusses that trust and trustworthiness are distinct and have causal relationships, the dimensions (ability, integrity, and benevolence) of trustworthiness are related but theoretically distinct, and trust performs a mediating role within its nomological network.

• Asian Journal of Innovation and Policy
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• v.3 no.2
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• pp.216-244
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• 2014

This paper empirically establishes the role played by the ecosystem related parameters in the emergence and growth of high technology start-up clusters in India. It is mainly based on secondary data from six major start-up hubs in India during the period 2005-2013. Our results throw up several interesting findings. First of all, we find that traditional infrastructure related factors or robust macroeconomic situation in general are not the most important drivers. What really seem to matter are the specific start-up ecosystem related factors - such as the Internet penetration, volume of deal flow, availability of VC funding and a pre-existing critical mass of relevant high technology businesses and skill-sets. Above all, our study points out that high economic growth alone will not automatically lead to spillovers in the form of a vibrant start-up ecosystem. Rather it has to be a product of conscious and concerted policy efforts at all levels that directly address the main challenges faced by the early-stage start-ups.

• Knowledge Management Research
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• v.16 no.2
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• pp.29-45
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• 2015

The number of studies on social media has increased rapidly worldwide. There has been, however, little effort to assess the achievements and limitations of social media studies up to present. The purpose of this study is to provide a systematical viewpoint on social media research published by scholarly business-related journals. Our analysis focus on research topic, functionality, targeted media types, methodology, and characteristics. User research receives the most attention, followed by effect research in terms of developmental models of media research agenda. The major methodological trend is online survey. Facebook and twitter are the two most popular mediums studied in literature, and social media is mainly characterized as information sharing as well as relationship building. Two recommendations are suggested in ways to strengthen social media research: more various topics and application areas, and the rigor and diversity of research methods.

• Journal of the Korean Home Economics Association
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• v.44 no.5 s.219
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• pp.9-19
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• 2006

The purpose of this research was to investigate factors related to the child care center director's transformational leadership and differences of the awareness about transformational leadership between child care center directors and teachers. A survey was conducted using the questionnaire developed by Lee suk-kyung (1997). Results of this research showed that type of child care center, number of children in the program, director's age, educational degree and years of career related to child care, affected the child care director's transformational leadership as recognized by themselves. From a teacher's point of view, director's transformational leadership was influenced by director's age, educational degree, and years of career related to child care. In addition, different level of awareness about director's transformational leadership between child care directors and teachers was found. Based on the result, a program to enhance director's leadership is strongly needed.

• Child Studies in Asia-Pacific Contexts
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• v.4 no.1
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• pp.1-12
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• 2014

Emotion is a central feature of social interactions. In this study, we examined age-related changes in emotion expressiveness and emotion knowledge and how young children's emotion expressiveness and knowledge were related. A total of 300 children attending a daycare center contributed data for the study. Observation and interview data relevant to measures of emotion expressiveness and knowledge were collected and analyzed. Both emotion knowledge and expressed positive affect increased with age. Older preschool children expressed positive affect more frequently than did younger preschoolers. Older preschool children also labeled, recognized, and provided plausible causes mores accurately than did younger preschool children. In addition, we tested whether children's errors on the free labeling component conform to the structural model previously suggested by Bullock and Russell (1986) and found that preschool children were using systematic strategies for labeling emotion states. Relations between emotion expressiveness and emotion knowledge generally were not significant, suggesting that emotional competence is only gradually constructed by the child over the preschool years.