• Journal of the Korean Home Economics Association
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• v.43 no.5 s.207
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• pp.221-234
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• 2005

This study investigated the emotional inferences depending on the children's age, character's personality traits, and emotional situations. One hundred three subjects (34 3-year-olds, 33 5-year-olds and 36 7-year-olds) were recruited from 3 daycare centers and 1 elementary school. Eight stories, consisting of four personality traits (positive-'active','helpful', negative-'selfish','mean') and two emotional situations (equivocal and unequivocal situation), were presented with three pictures each. The statistical methods adopted for the data analysis were repeated measure ANOVA, and paired t-test. The results showed that the 3-year-olds showed lower scores of emotional inferences than the 5- and 7-year-olds. However, there were no significant differences between the 5- and 7-year-olds. Children showed more personal inferential responses in the negative personality trait and equivocal situation.

• Korean Journal of Child Studies
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• v.36 no.1
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• pp.85-98
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• 2015

This study aimed to investigate measures which could reduce the daily stress of 3-5-years-olds who are attending daycare centers, by examining the effects of 3-5-years-olds' time spent in daycare centers and peer competence on daily stress. To this end, two hundred and fifty 3-5-years-olds attending the same daycare for more than 6 months were selected from 5 daycare centers in Daejeon Metropolitan City and tested for their daily stress levels. In addition their teachers completed peer competence tests and a short questionnaire regarding the 3-5-years-olds. In terms of the results, those 3-5-years-olds who spent more than 7 hours or longer in daycare centers were found to have a higher level of daily stress than the 3-5-years-olds who spent less than 7 hours. Additionally, those 3-5-years-olds who returned home after 6 p.m were found to have a higher level of daily stress than the 3-5-years-olds who returned home before 6 p.m. Moreover, it was found that the more time 3-5-years-olds spent in daycare centers and the lower their peer competences were, the more daily stress they seemed to experience.

• Korean Journal of Childcare and Education
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• v.9 no.6
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• pp.107-127
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• 2013

The purpose of this study was to investigate the differences in children's reading abilities of environmental print and phonological awareness by children's age and the relationship between children's reading abilities of environmental print and phonological awareness. The subjects were 90 children, 3 to 4 years of age. The Children's Reading Abilities of Environmental Print Scale (CRAEPS) developed by Son (2012) and Phonological Awareness Scale (PAS) revised by Choi (2007) were used to measure children's reading ability of environmental prints and phonological awareness. The results of this study were as follows: Firstly, 4-year-olds performed significantly better than 3-year-olds on the environmental print reading tasks. Also, 4 year-olds scored significantly higher than 3-year-olds in syllable counting, syllable deletion, and phoneme substitution. Secondly, children's scores on the environmental print reading tasks were positively correlated with phonological awareness. In other words, the 3-year-olds who could read environmental prints better got higher scores in syllable counting and the 4-year-olds who could read environmental prints better got higher scores in syllable counting, syllable deletion, and phoneme substitution.

• The Journal of Korean Physical Therapy
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• v.11 no.2
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• pp.21-28
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• 1999

The purpose of this study were to describe the performance 67 kindergartener who aged from 4 to 7 years on the Pediatric Clinical Test of Sensory Interaction for Balance(P-CTSIB) and to determine difference with foot position and age. All Subjects were performance with different foot position that were feet-together, heel-toes. the starting position was that subject placed their hands on the hips, The results of this study were as follows 1. There were significiant difference in all instances by age whoa subjects were foot together(p<0.05). 2. There were singificiant difference in all instances by age excepts condition V awhen subjects were heel toes(p<0.05). 3. Duration of balance performance, of 4-year-olds were shortest and duration of balance performance of 7-year-olds were longest.

• Korean Journal of Child Studies
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• v.14 no.1
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• pp.77-89
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• 1993

The purpose of this study was to investigate (1) children's field dependence by age and sex, (2) children's interpersonal problem solving ability by age, sex, and contextual factors, (3) children's interpersonal problem solving ability by field dependence. The subjects were 120 five-, seven-, and nine-year-olds. Children's field-dependence was measured with the Children's Embedded Figures Test (CEFT). Children's interpersonal problem solving ability was measured with the Preschool Interpersonal Problem Solving Test (PIPS Test). Statistical methods adopted for data analysis were frequencies, percentiles, means, standard deviation, t-test, oneway ANOVA. $Scheff{\acute{e}}$ test and Pearson's correlations. Major findings were that (1) The older children were more field-independent than the younger ones (2) The older children suggested more problem solving methods and higher-level problem solving strategies than the younger ones. (3) Children suggested higher-level problem solving strategies in contexts involving familiar as opposed to unfamiliar participants and contexts involving children as opposed to adults. (4) 9-year-olds' field-independence was positively associated with interpersonal problem solving ability.

• Korean Journal of Child Studies
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• v.24 no.1
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• pp.61-76
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• 2003

This study investigated children's cognition of physically impossible televised events by age and types of tasks. The 67 subjects were 3-, 5-, and 7-year-old children from 1 day care center and 1 elementary school in Seoul. Children's responses were taped and transcribed. Cognition about the events were measured by recognition of impossibility, possibility of replication, and reasons for the possibility of replication of the events. Data were analysed by ANOVA(repeated measure) and $Scheff{\acute{e}}$ test. Children's cognitions about the events varied by age groups. Three-year-old children's recognition of the 3 tasks was different from that of the 5-and 7-year-old children; while 3-year-olds interpreted the events on TV as real, 5- and 7-year-olds considered them to be unreal.

• Korean Journal of Child Studies
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• v.11 no.2
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• pp.82-97
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• 1990

The purpose of this study was to investigate (1) the developmental level of children's concept of gender by age and sex. (2) children's sex-specific behaviors by age and sex, and (3) children's sex-specific behaviors by developmental level of gender constancy. The subjects were 164 children (forty 3-year-olds, forty-three 5-year-olds, forty 7-year-olds and forty-one 9-year olds) with nearly equal numbers of boys and girls. They were selected from two kindergartens and one elementary school. A quasi experiment was carried out with the procedures described by Slaby and Frey (1976) to measure children's developmental level of the concept of gender constancy. Two experiments were carried out to observe children's sex-specific behaviors: one for children's toy choice behavior and the other for children's interaction with their peers. Statistical methods adopted for data analysis were frequencies. percentiles, mean. and $X^2$. It was found that children's sex-specific behaviors were different according to their developmental level of gender constancy. Children's developmental level of gender constancy was significantly different according to their age, but there was no difference according to their sex. Children's toy-choice behavior was significantly different according to their age and sex. Children's sex-specific behaviors were significantly different according to their concept of gender constancy.

• Korean Journal of Child Studies
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• v.21 no.1
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• pp.35-44
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• 2000

This study examined the development of phonological awareness of 3-, 5-, and 7-year-old children, 20 subjects at each age level. The 3-year-olds were given 2 phoneme detection tasks and the 5- and 7-year-olds were given 5 phoneme detection tasks. In each task, the children first heard a target syllable together with 2 other syllables and were asked to tell which of the 2 syllables sounded similar to the target. Children were able to detect relatively large segments ($Consonant_1+Vowel$ or $Vowel+Consonant_2$: $C_1V$ or $VC_2$) at the age of 3 and gradually progressed to smaller sound segments(e.g., phonemes). This study indicated the Korean children detect $C_1V$ segments better than $VC_2$ segments and detect the initial consonant better than the middle vowel and the final consonant.

• Korean Journal of Clinical Laboratory Science
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• v.41 no.4
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• pp.145-152
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• 2009

Novel influenza A virus, subtype H1N1 of swine-lineage, has been transmitted rapidly to many regions of the world. Rapid detection of the virus is essential to instigate appropriate patient care and public health management and for disease surveillance. The aim of this study is to determine the prevalence of novel influenza A (H1N1) virus in Korea using reverse-transcription real time polymerase chain reaction (rRT-PCR). Novel H1N1 virus was detected in a total of 8,948 nasopharyngeal samples from patients with influenza-like illness throughout Korea from August to September 2009. RNA was extracted from $300{\mu}l$of sample using an RNA extraction kit (Zymo Research, CA, USA). In the present study, Genekam kit (Genekam, Duisburg, Germany) was used to detect novel H1N1 virus. Novel H1N1 virus was found in 1,130 samples from a total of 8,948 samples (12.6%). The highest frequency was found in 10- to 19-year-olds (M: 29.3% vs. F: 16.4%), followed by 20- to 29-year-olds (M: 17.9% vs. F: 15.4%), 40- to 49-year-olds (M: 6.5% vs. F: 8.1%), 50- to 59-year-olds (M: 6.0% vs. F: 5.5%), and 30- to 39-year-olds (M: 4.6% vs. F: 3.8%). The mean positive rate was higher in men than in women (M: 14.7% vs. F: 7.4%). Novel H1N1 virus showed the lowest prevalence in patients over 60 years old. The positive rate increased daily and showed a significant high peak in mid-September 2009. In 19 provinces of Korea, Cheonan (41.1%), Busan (37.3%), Gangneung (33.3%), Jinju (32.1%), Ulsan (24.6%), Deajeon (23.7%) areas showed high frequencies and other provinces were found less than 10% of novel H1N1 virus. Since reverse-transcription real time PCR assay is rapid, accurate, and convenient, it may assist public health laboratories in detecting novel H1N1 virus. Moreover, these data could be useful for the management of patients with influenza-like illness.

• Journal of Families and Better Life
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• v.24 no.2 s.80
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• pp.15-26
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• 2006

The purposes of this study were (1) to investigate children's personalized inferences of characters emotional reactions depending on character's personality trait, emotional situation, children's age and gender, (2) to investigate children's personalized inferences of character's behavioral reactions depending on character's personality trait, emotional situation, children's age and gender, (3) to investigate differences between children's personalized inferences of character's emotional reaction and that of character's behavioral reactions. The subjects were 103 children from three age groups (thirty-four 3-year-olds, thirty-three 5-year-olds and thirty-six 7-year-olds). The statistical methods adopted for the data analysis were frequency, percentile, mean, standard deviation, repeated measure ANOVA and paired t-test. The result showed that there were significant differences in children's personalized inferences of character's emotional reaction depending on character's personality trait, emotional situation and their age. There were significant differences in children's personalized inferences of character's behavioral reaction depending on children's age and gender. There were significant differences between personalized inferences of character's emotional reaction and behavioral reactions.