Objective: This study examined the relationships among teachers' empathy ability, children's peer competence and teacher-child relationships. Methods: 180 teachers and 360 children from 3 to 5 years old were included in the study. The research variables were measured by teachers' self-report through questionnaires. The collected data were analyzed by t-test, one-way ANOVA, and three-step mediated regression analysis. Results: First, teachers' empathy ability and teacher-child relationship showed significant differences according to teacher variables (age, marital status, parental status). And children's peer competence was significantly different according to gender. Second, intimacy which was a subfactor of teacher-child relationships showed a perfect mediating role in the association between teachers' empathy ability and peer competence. Conclusion/Implications: These results suggest the importance of teacher-child's intimate relationships since it affects the child's peer competence significantly. In this study, it was found that, in order to help foster the teacher's empathic ability and teacher-child relationships which have positive effects on the child's desirable peer formation, continuous teacher education and diverse studies are needed.

Objective: The purpose of this study was to examine the direct and indirect effects of mothers' and children's emotional instability and maternal affectionate-rational parenting on children's attributional style. Methods: The participants of this study were 253 4th, 5th and 6th grade elementary school students and their mothers in Seoul and Incheon. Data were analyzed by path analysis using AMOS 21.0. Results: The results were as follows: First, children's attributional style for negative and positive events was significantly related to children's emotional instability and maternal affectionate-rational parenting. Also, mothers' and children's emotional instability was significantly associated with affectionate-rational parenting. Second, mothers' emotional instability had indirect effects on children's attributional style for negative and positive events through maternal affectionate-rational parenting. Finally, children's emotional instability had not only significant effects on children's attributional style for positive achievement events, but also indirect effects on children's attributional style for negative and positive events through maternal affectionate-rational parenting. Conclusion/Implications: The results of this study suggest that both environmental and individual factors, including mothers'and children's emotional instability and maternal affectionate-rational parenting, need to be considered to explain children's attributional style. Also, these findings have implications for developing intervention programs for children's attributional style and parental education.

Objective: The purpose of this study was to explore the feasibility to utilize image data recorded and accumulated from CCTV at child care centers. Methods: Literature reviews, consultations and workshops with scholars studying child development, legal professionals, and engineers, focus group interviews with professionals working with young children, and surveys targeting parents, directors and teachers were implemented. Results: It was found the big data from CCTV at child care centers can be used to make policies and implement research as a secondary data set after anonymization. Extracting implicit and useful data from images stored on CCTV is technically feasible. Also, it can be legally guaranteed to analyze the data under the condition of acquiring informed consents. Conclusion/Implications: It was likely to utilize image data from CCTV at child care centers as a secondary data set in order for policy development and scholarly purposes, after overcoming obstacles of the budget for additional infrastructures and consents of information holders.

Objective: This study was conducted to investigate the effects of small-group arithmetic word problem activities with concrete materials on 5 year old children's mathematical ability and attitude. Methods: A total of 34 five-year-old children (control group 16 children, experimental group18 children) attending two kindergartens in P city participated in this study. Fifteen small-group arithmetic word problem activities with concrete materials were conducted in the classroom of the experimental group twice a week for eight weeks. Before and after the activities, all the participants individually took a basic arithmetic test, mathematical word problem solving test, and mathematical attitudes test. Results: First, we observed that the children in the experimental group achieved significantly higher scores on the mathematical ability tests, including the basic arithmetic test and mathematical word problems solving test when compared to the children in the control group. Second, we also found that children in the experimental group showed higher improvement in the mathematical attitudes test than their counterparts. Conclusion/Implications: The results of this study suggest that small-group arithmetic word problem activities with concrete materials are effective in improving children's mathematical ability and attitudes.

Objective: The purpose of this study is to examine the relationship between student teachers' perceptions on cooperating teacher's professionalism and motivation to become a teacher. Methods: The participants were 399 student teachers studying child care and education at two-year or four-year colleges in Seoul, Gyeonggi, Incheon, South Chungcheong, and Daejeon. They completed questionnaires on student teachers' perceptions on cooperating teacher's professionalism and motivation to become a teacher. The data were analyzed using ANOVA, t-test, and partial-correlation analyses. Results: There were three findings from this study. First, there was a significant difference in student teachers' perceptions on cooperating teacher's professionalism depending on the type of child care center and education system, rather than the type of class. Second, there was a significant difference in student teachers' motivation to become a teacher depending on the students' education system. Third, student teachers' perceptions on their cooperating teacher's professionalism correlated with their motivation to become a teacher. Conclusion/Implications: This study suggests that student teachers' perceptions on cooperating teacher's professionalism is significantly different depending on the type of child care center or educational system and is related with motivation to become a teacher.

Objective: The purpose of this study is to investigate the moderating role of Ego-Resilience between Peer Attachment and Mobile Phone Dependency in late adolescence. Methods: The participants were 2056 third year high school adolescents (1,041 boys and 1,015 girls) from the Korea Youth Panel Study (KYPS), a national representative of Korean Children and adolescence. Hierarchical Regression was used for data analysis. Results: First, the correlation between peer attachment, ego-resilience and mobile phone dependency were all significant. Second, ego-resilience takes the role of moderator for mobile phone dependency. In detail, ego-resilience relieves the mobile phone dependency caused by 'peer relationships' or 'conflict in peer relationships. Conclusion/Implications: Ego-resilience was found to control the relationship between peer attachment and mobile phone dependency. Therefore, in order to lower the dependence of mobile phones in adolescents with low peer attachment, a program that can enhance ego-resilience is needed.

Objective: The purpose of this study was to figure out early childhood teachers' perception on rights of young children and what they do to implement the perceived rights of young children in early childhood settings. Methods: Two individual and two group interviews were conducted. First, individual interviews were held with one childcare center teacher, and then interviews were held with one kindergarten teacher. Both group interviews were conducted with three different kindergarten teachers. All interviews were held two times. Recorded and transcribed interview data were analyzed. Results: The results are as follows. First, participants perceived rights as natural, protective, expressive, equally respectful, and joyful but understood differently from that of adults due to developmental status of young children, which included rights to life, equality, participation, protection, and happiness. Second, teachers remarked that they used strategies to project young children's emotions to implement perception on rights to life and happiness, discern deprivation from violation for rights to protection and equality, and set rules and have double standards utilizing resources around, for rights to participation. Conclusion/Implications: These results have implication for organizing contents for rights education for early childhood teachers.

Objective: The purpose is to verify that whether there are significant correlation between parent-teacher cooperation, quality of home environment, and mathematical interaction of parents and cognitive development of 3-year-olds, and the quality of home environment and mathematical interaction mediate the relationship between the parent-teacher cooperation and the cognitive development. Methods: A test was performed on 110 3-year-olds enrolledin a daycare center located in city S, and a questionnaire survey was conducted on their parents. We analyzed our data using SPSS WIN 21.0 and pearson's correlation, tested the mediating effect using regression, and used the Sobel test to check significance of the mediating effect. Results: Cognitive development of 3-year-olds was correlated with the parent- teacher cooperation, the quality of home environment, and mathematical interaction of parents. The quality of home environment showed complete mediating effect on the relationship between the parent-teacher cooperation and the cognitive development, and the mathematical interaction showed complete mediating effect on the relationship between the parent-teacher cooperation and the cognitive development. Conclusion/Implications: The parent-teacher cooperation indirectly predicts the cognitive development through the quality of home environment and the mathematical interaction. This research can contribute to the development of the family- institution connection program to facilitate the parent-teacher cooperation.

Objective: The purposes of this study are to test a direct effect of mother-child interaction and to examine the mediating effect of children's smart media use on a child's sleeping hours. Methods: We analyzed the longitudinal data of 1,494 children from the $6^{th}$ panel study of Korean children collected by the Korea Institute of Child Care and Education in 2013, which examined 5-year-old children. The main analysis method was Structural Equation Modeling (SEM). Results: The study results showed that mother-child interaction had a direct effect on the child's sleeping hours. Children's smart media use also directly influenced the child's sleeping hours. In regard to mediation, the results revealed that children's smart media use mediated the relationship between mother-child interaction and child's sleeping hours. Conclusion/Implications: Bidirectional mother-child interaction and the degree of smart media use played an important role in children's sleeping hours. This study suggests policy and practical implications in order to retain children's healthy sleeping hours.