• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.10 no.1
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• pp.3-14
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• 1999

Objective：This study was designed to investigate the difference between executive function of Attention Deficit/Hyperactivity Disorder(ADHD) group and that of neurotics, and to investigate the developmental aspects of ADHD group's executive function. Method：Executive function between ADHD(N=87) and Neurotics(N=19) was evaluated through their performance on the Wisconsin Card Sorting Test. The results were analyzed by 2-way ANOVA and t-test. Results：The results revealed group difference between ADHD and neurotics in total correct reponses, total error responses, nonperseverative errors, number of categories completed, conceptual level responses. There was no significant difference between the performance of 8-12 aged group and 13-15 aged group. But 7-8 aged group showed significantly poor performance than 8-12 aged in total responses, total error responses, perseverative responses, perseverative error responses, nonperseverative error responses. Conclusions：In comparison to the neurotics group, the children of ADHD group are suggested to be lacking the ability to correct their responses according to the external feedback and they probably respond randomly without self-control. However, as there is no difference between perseverative errors and perseverative responses, the interpretation of this finding warrants caution. It also suggests that the developmental aspects should be considered in the studies of executive functions because there are differences in the performance of executive functions by ages.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.4
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• pp.513-522
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• 2017

This study was conducted to examine the relationships between milk and milk product intake and bone health. The data from the 2008~2011 Korean National Health and Nutrition Examination Survey (KNHANES) were used for data analysis. Subjects included 4,626 men and 6,144 women aged 19 to 64 years. Daily intake frequency of milk and milk products was obtained using a food frequency questionnaire and divided into two categories: less than one serving per day and more than one serving per day. Bone mineral density (BMD) values of total femur, femoral neck, and lumbar spine were compared based on daily intake frequency, and relationships between milk and milk product daily intake frequency and osteoporosis risk were evaluated based on logistic regression. In men aged 30~39, BMDs of total femur and femoral neck were significantly higher in the group that consumed milk more than one serving per day (P<0.05). Intake frequency of milk and milk products was also significantly related to both BMDs of total femur and femoral neck. The odds ratio (OR) for milk intake frequency (more than one serving per day) compared to intake frequency less than one serving per day was 0.36 [95% confidence interval (CI) 0.21~0.62], and the OR for milk and milk products intake frequency (more than one serving per day) was 0.49 (95% CI 0.28~0.86) in women aged 50~64. These results indicate that increased consumption of milk and its products is associated with reduced risk of bone health disease, and adequate intakes of milk and milk products might play an important role in maintaining optimum bone health. Further research on the causal relationship and dose-response association between milk intake and bone heath using prospective cohort data is required prior to applying the observed results to programs that prevent bone health problems.

• The Journal of the Korea Contents Association
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• v.12 no.12
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• pp.170-178
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• 2012

This study examines perceived homophily by the degree of self disclosure among SNS users. In this research, there were three different groups in terms of the degree of self disclosure among SNS users such as strong, medium and weak self disclosure groups The major results are as follows: Firstly, the higher the degree of self disclosure, the more social network service use. In addition, the higher the degree of self disclosure, the smaller the degree of online activity including blog and mini web page. Secondly, the higher the degree of self disclosure, the higher the degree of socio-demographic homophily. It can be argued that the strong group had much more mean scores than that of medium and weak groups in terms of regions, gender, age and vocation except nationality. Also, the higher the degree of self disclosure, the higher the degree of shared homophily except of political opinion homophily.

• 한국노년학
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• v.39 no.4
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• pp.959-976
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• 2019

The purpose of this study was to understand socio-demographic factors related to older adults' participation patterns in lifelong education. For the purpose, this study used the raw data of 2017 Survey of the Living Conditions of the Elderly (SLCE) conducted by The Korea Institute for Health and Social Affairs. From the data of 10,073 older adults, their lifelong education participation, participating program types, participating organizations, and participating frequency were analyzed by their sex, age, educational level, household income, the longest job status, and health status. This study found that female, age of 70-74 and 75-79, educational levels of high school and higher, the longest job status of regular employees and unpaid family workers, and decent health status of older adults more participated in lifelong education. According to lifelong education program types, significant differences were found between education groups of middle school/lower and groups of high school/higher and between 1, 2 quintile income groups and 3, 4, 5 quintile income groups. In relation to the participating organizations, groups of 70 years and older, middle school and higher education level, under 3 quintile income, and poor health tended to participate in lifelong education at the elderly welfare center, senior citizens, and elderly classrooms. In terms of participation frequency, high school and college/higher than 0 year of school education, and regular workers than unpaid family workers were more frequently participated in lifelong education. This study showed the inequality in lifelong education participation according to older adults' demographic characteristics; finally, this study suggested necessary policies and academic discussions for future older adults' lifelong education.

• The Journal of the Korea Contents Association
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• v.15 no.8
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• pp.424-433
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• 2015

This study tried to investigate the differences between auditory preferences for a discrimination study of minimal pairs with the different onset and the same nucleus of a syllable on the basis of articulator-distance in case of Korean infants and toddlers. As a result we found a main effect for articulator-distance and age but not an effect according to the types of phonation especially in terms of tense. Former results are line with the previous studies having reported the order of consonants acquisition based on the places of articulation suggesting that more sensitive responses for the contiguous and different phonemes may lead earlier acquisition for the same place of articulation of the speech sounds. Specifically, bilabial soudns are followed by alveolar and palatal sounds in order. The latter results also showed that tense consonants got a high rate of recognition beside lax consonants according to the age and sex.

• The Journal of the Korea Contents Association
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• v.13 no.7
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• pp.301-310
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• 2013

The purpose of this study was to investigate and compare the risk factors of cognitive impairment between non-depressive elderly and depressive elderly. Data was obtained from 1,477 elderly not diagnosed to dementia. In result, non-depressive elderly group was found as having risk factors of cognitive function in age and educational level. In non-depressive group, older elderly(OR=1.095) and the elderly with no experience of education(OR=9.129) had more in risk of cognitive impairment. Depressive elderly group was found as having risk in age, educational level, and residence style. In depressive elderly, older elderly (OR=1.101), the person with low education(illiteracy:OR=33.020, elementary:OR=10.176, middle school: OR=9.841), and the elderly living in nursing home(OR=8.490) had more in risk of cognitive impairment. Through this result, it could be suggested that the depressive elderly with low educational level living in nursing home should be intervened to decrease the rate of dementia more effectively.

• Journal of the Korean Data Analysis Society
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• v.20 no.6
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• pp.3117-3126
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• 2018

The operating system update is a basic step to maintain a safe internet use environment. This study analyzed whether the implementation of the operating system update was related to gender and age group during the violation accident prevention act in relation to information protection on the internet, and tried to verify the validity of these factors by analyzing the influence of gender and age group. In this study, logistic regression analysis was conducted based on the information security survey data surveyed by the Korea Internet & Security Agency in 2016. As a result, gender and age were surveyed as factors related to the implementation of operating system updates. As a result of analyzing the impact on the implementation of operating system updates by gender, it is estimated that the odds are 0.419 times higher for women than for men. According to the analysis of the operating system update by age group based on the 50s, which is a vulnerable group of information, the result is that the odds are 13.266 times higher in the 20s than the 50s.

• Phonetics and Speech Sciences
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• v.15 no.3
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• pp.17-25
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• 2023

This study examines the fundamental frequency(f0) distribution of 2,740 Korean speakers in a dialogue speech corpus. Praat and R were used for the collection and analysis of acoustical f0 data after removing extreme values considering the interquartile f0 range of the intonational phrases produced by each individual speaker. Results showed that the average f0 value of all speakers was 185 Hz and the median value was 187 Hz. The f0 data showed a positively skewed distribution of 0.11, and the kurtosis was -0.09, which is close to the normal distribution. The pitch values of daily conversations varied in the range of 238 Hz. Further examination of the male and female groups showed distinct median f0 values: 114 Hz for males and 199 Hz for females. A t-test between the two groups yielded a significant difference. The skewness representing the distribution shape was 1.24 for the male group and 0.58 for the female group. The kurtosis was 5.21 and 3.88 for the male and female groups, and the male group values appeared leptokurtic. A regression analysis between the median f0 and age yielded a slope of 0.15 for the male group and -0.586 for the female group, which indicated a divergent relationship. In conclusion, a normative f0 distribution of different Korean age and sex groups can be examined in the conversational speech corpus recorded by a massive number of participants. However, more rigorous data might be required to define a relation between age and f0 values.

• Korean Journal of Culture and Social Issue
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• v.27 no.4
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• pp.561-584
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• 2021

This study was conducted to classify 601 Korean adults into latent classes according to their love types and identify the differences in depression and find variables that affect the latent classes classification. As a result of the latent class analysis, the latent group for love types of Korean adults were classified into the L-H (7.7%) group, which showed the highest level of all three factors of intimacy, passion, and commitment, and the L-MH (33.6%) group, which all three factors were higher than the average, the L-M (39.8%) group with the mean of all three factors, the L-ML (14.6%) group with all three factors lower than the mean, and the L-L (4.3%) group with the lowest all three factors. Also, as a result of ANOVA, the L-MH group was psychologically healthier and more adaptive than the L-ML group. As a result of multinomial logistic analysis, females were more likely to belong to L-M, L-ML and L-L groups than males. In addition, singles were more likely to belong to the L-M and L-ML groups than those who were married. Also, the higher the anxiety attachment level, the higher the likelihood of belonging to the L-M, L-ML, and L-L groups than the L-H and L-MH groups, the L-ML and L-L groups than the L-M groups, and the L-L group rather than the L-ML groups. However, age, neuroticism, and emotional regulation did not affect the classification of latent classes. This study is meaningful in that it identified the various latent classes for the love types of Korean adults more three-dimensionally and suggested the possibility of differential interventions according to the characteristics of each group.

• Korean Journal of Human Ecology
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• v.17 no.4
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• pp.693-705
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• 2008

본 연구는 인터넷 사용동기에 근거한 온라인 시장을 세분화하고자 하였다. 표본은 미국 남서부지역의 대학생으로 총 219명의 Y세대 소비자로 구성되었다. 자료분석을 위해 군집분석(Cluster Analysis)과 분산분석(ANOVA)을 사용하였다. 군집분석결과, 온라인소비자는 3개의 세분시장 즉, "쾌락적 소비자", "실용적 소비자", "비능동적 소비자" 집단으로 분류되었다. 개인적 특성 중, 성별과 연령에 따라 세 집단별 유의한 차이가 없었으나, 능동적 소비자 집단 (쾌락적소비자, 실용적 소비자)이 비능동적 소비자 집단보다 인터넷 사용시간과 온라인쇼핑에 드는 비용을 더 많이 소비하는 것으로 나타났다. 온라인구매성향에 있어서, 전반적으로 충동구매성향이 낮지만, 세 집단별 통계적으로 유의한 차이를 보여, 쾌락적 소비자가 가장 높았고, 다음은 실용적 소비자, 비능동적 소비자 순이었다. 계획구매성향은 전반적으로 높았으며, 쾌락적 소비자와 실용적 소비자 두 집단이 비능동적 소비자보다 계획구매성향이 더 높게 나타났다. 또한, 온라인구매의도는 실용적소비자가 가장 높았으며, 다음은 쾌락적 소비자, 비능동적 소비자 순이었다. 구체적으로 상품군별 구매의도차이를 검증한결과, 실용적소비자는 "책 또는 잡지", "액세서리와 보석"에 대한 온라인 구매의도가 가장 높은 반면, 쾌락적 소비자는 "여행티켓 또는 예약", "오락 및 여가상품"에 대한 온라인 구매의도가 가장 높은 경향을 보였다. 따라서, Y세대 소비자를 위한 온라인 시장세분화에 따른 차별화된 마케팅 전략이 논의되었다.