• Journal of the Korean BIBLIA Society for library and Information Science
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• v.16 no.2
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• pp.177-201
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• 2005

The purpose of this research is to study the meanings and characteristics of qualitative research method in LIS. As the philosophy and epistemology of qualitative research are widely different from those of quantitative research, the meaning of validity and reliability must be interpreted in its ow9 structure and dimension. Essentially qualitative researchers seek to understand and interpret the world of others from their own viewpoints which basically tend to be subjective. Accordingly, qualitative researchers‘ understandings and interpretations are met with readers' subjectivity. By carefully analyzing the nature of qualitative research in LIS, I tried to point out some problems in terms of validity and reliability and practical strategies. Six problems issued in the qualitative research method are presented.

• Journal of The Korean Association For Science Education
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• v.40 no.3
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• pp.253-269
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• 2020

This study aims to develop items to diagnose pre-service physics teachers' understanding of the conceptual knowledge of modern physics, based on the achievement criteria presented in the 2015 revised national science curriculum, and to identify the validity and reliability of the newly developed items. Data were collected from 467 pre-service physics teachers in the Physical Education Department or Science Education Department (Physics Education Major) of 15 universities across the nation. In this study the content validity, substantive validity, the internal structure validity, generalization validity, and the external validity proposed by Messick (1995) were examined by various statistical tests. The results of the MNSQ analysis showed that there was no nonconformity in the 23 items. The internal structure validity was confirmed by the standardized residual variance analysis, which shows that the 22 items was unidimensional. The generalization validity was confirmed by differential item functioning (DIF) analysis about groups lectured or not modern physics/quantum mechanics. In addition, item analysis and test analysis based on classical test theory were performed. The mean item difficulty is 0.66, mean item discrimination is 0.47 and mean point biserial coefficient obtained was 0.41. These results for item parameters satisfied the criteria respectively. The reliability of the internal consistency of the KR-20 is 0.77 and the Ferguson's delta obtained was δ = 0.972. By Rasch model analysis, the item difficulty (item measures) was discussed.

• 한국노년학
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• v.29 no.1
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• pp.117-134
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• 2009

The purpose of this study was designed to develop an questionnaire for healthy aging. The subjects of this study were total 335 people who participated in regular exercise and went to welfare centers in Seoul. The validity and reliability were tested for verifying the developed questionnaire for healthy aging. The data were collected between June 12, 2006 and October 27, 2006. The mean, standard deviation, kurtosis, skewness, reliability, exploratory factor analysis and confirmatory factor were analyzed for statistical purpose using by SPSS-Win 12.0 program. The results were as follows; First, to obtain content validity, the results of previous research and the value system responses were submitted to a judgement group. Second, the results of the factor analysis of the 20 items making up the questionnaire were classified into the following 3 factors; physiological health(6 items), cognitive-mental health(6 items), social-support health(8 items). Third, the reliability of the questionnaire for healthy aging was 0.891(Cronbach's alpha). In the factor analysis Cronbach's alpha correlations for the 4 factors ranged from 0.642 to 0.885. Fourth, the results of confirmatory factor analysis, all the index values(NFI, RFI, CFI, Delta 2 IFI) were close to 1. Thus, this questionnaire demonstrated good reliability and validity and therefore it was an appropriate measurement of healthy aging.

• The Journal of Korean Academy of Sensory Integration
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• v.21 no.3
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• pp.27-38
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• 2023

Objective : This study aims to verify the validity and reliability of the Korean version of the Sensory Processing and Self-Regulation Checklist (SPSRC) for children with and without autism spectrum disorder. Methods : The Pearson product-moment correlation coefficient was calculated using Short Sensory Profile (SSP) to verify concurrent validity. Construct validity was verified by comparing the sensory processing ability and self-regulation ability of the two groups. Cronbach's α was calculated in the case of internal consistency for reliability verification, and the test-retest reliability was verified through the Pearson correlation coefficient. Results : Based on the verification of the concurrent validity, the Korean version of SPSRC and SSP showed a statistically significant correlation (p < 0.01). The construct validity was found to have a statistically significant difference between the two groups in the area and sub-items of the Korean version of SPSRC (p < 0.001). For the internal consistency, Cronbach's α ranged from 0.700 to 0.975. The test-retest reliability showed that the correlation coefficient ranged from 0.937 to 0.997. Conclusion : The Korean version of SPSRC was confirmed to be an evaluation tool with high validity and reliability. It is expected to be used as an evaluation tool for planning treatment goals in clinical trials and as a meaningful basis for future research.

• The Journal of the Korea Contents Association
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• v.21 no.5
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• pp.359-366
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• 2021

BCBS (Broad Conceptualization of Beauty Scale) is a measurement tool designed to evaluate the standards of an individual's inner beauty. In this study, reliability and feasibility were verified for 100 female college students using the final Korean version BCBS 9 questions that were formed through the adaptation process. As a result of checking the internal consistency to verify the reliability of Korean version BCBS, it showed high reliability with Cronbach's 𝜶 0.878, subjective beauty 0.874, physical beauty 0.808 and psychological beauty 0.880. As a result of exploratory and confirmatory factor analysis to verify feasibility of Korean version BCBS, feasibility was secured by showing significant results in all items. Therefore, through this study, the Korean version BCBS was proved to be a useful measurement tool that comprehensively evaluates the concept of women's broad scale beauty, and using this as basic data, it is believed that it can be used for professional development and research on internalized beauty for female college students.

• Korean Journal of Culture and Social Issue
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• v.24 no.3
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• pp.385-410
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• 2018

Materialistic values can be a important variable to understand Koreans' psychological well-being and mental health. This study aimed to validate the Korean version of the Material Values Scale (K-MVS)(Richins & Dawson, 1992). In study 1, we performed confirmatory factor analysis(CFA) to ascertain the three factor model of the original MVS using 417 Korean undergraduate student data(sample 1). The CFA confirmed the three-factor model of the MVS. Yet, three items that yielded low factor loadings in this study as well as in other MVS validation studies were excluded from the final model. In study 2, content, construct, and concurrent validity of the K-MVS were examined with 650 undergraduate student data(Sample 2). We also tested measurement invariance across two groups(i.e., college student group of Sample 2 and employee group of Sample 3). The result revealed that the three-factor model of the K-MVS hold true across the two groups. Lastly test-retest reliability was calculated with 408 female college student data(Sample 4) that filled out K-MVS twice within 6 months. These findings suggest that the K-MVS is a reliable and valid measure for assessing materialistic values in Korea.

• The Journal of the Korea Contents Association
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• v.12 no.7
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• pp.394-405
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• 2012

This study is aimed at developing a tool to measuring school police's job performance, and verifying its credibility and validity. This study collected the sample to 250 subjects using a significance collection method to parents of elementary schools school police work. But excluding dishonestly responding data, this used total 210 people for the final analysis. This study executed experts' meeting, exploratory and confirmatory factor analysis, and item analysis to verify reliability, and verification of internal consistency and reliability. This study extracted and confirmed 7 factors for specialization, attitude, program, prevention activity of school violence, effect, basic duty, teaching for school time and home time, and correlation with related people. Through the above research approach and procedure, this study arrived at the following conclusion. First, validity to school police's job performance and measurement tool to job performance is very high. That is, school police's job performance was explored and confirmed through correlation with specialization, attitude, program, prevention activity of school violence, effect, basic job, teaching for school time and home time, and related people, and of them, explanation of attitude is the highest. Second, reliability to the measurement scale for school police's job performance is very high. That is, school police's job performance has high correlation between items, sub-factors, and total scores, and reliability of internal consistency, Cronbach's ${\alpha}$ value, is over .708. Putting them together, measurement scale for school police's job performance is a questionnaire sheet with very high level of validity and reliability.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.16 no.1
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• pp.98-105
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• 2005

Objectives : The purpose of this study was to examine the reliability and validity of the Korean version of Asperger Syndrome Diagnostic Scale as a tool to diagnose Asperger disorder. Methods : Subjects consisted of 15 Asperger disorder, 20 PDD & PDD NOS, 20 Communication disorder children who visited the department of child psychiatric outpatient clinic. The age range of the children was between 5 years 1 month and 15 years 6 month. The K-ASDS, the Korean version of Asperger disorder inventory (K-ADI), and K-CARS were administered to mothers of all children by clinical psychologists. Results The internal consistency of the ASDS was high (Chronbach's $\alpha=0.88$) and the range internal consistencies of each subscales of K-ASDS were from .83 to 66. Correlation coefficients between K-ASDS and KADI was significant. Discriminant analysis showed that the Korean version of ASDS significantly discriminate Asperger disorder from PDD and Communication disorder, and the percentage of correct classification were $71\%$. Conclusion : The results of this study proved that the Korean version of ASDS was a reliable and valid measure for Asperger disorder.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.8
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• pp.324-331
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• 2017

This study consisted of methodological research verifying the validity and reliability of the Korean version of the interpersonal emotion management (IEM) strategies scale after translating and modifying the scale developed by Little et al. The study verified the content validity, construct validity, concurrent validity and reliability based on 189 nurses working at four hospitals in the Seoul and Gyeonggi region. In this study, the Korean version of the IEM strategies scale was comprised of four factors, with a total of 15 questions that included three regarding situation modification, three regarding attention deployment, four regarding cognitive change, and five on modifying emotional response. Furthermore, verification of concurrent validity revealed that the Korean version of the IEM strategies scale was a valid tool as the correlation of the emotional intelligence scale appeared as r=0.60 (p<0.001). The reliability verification showed four factors at Cronbach's ${\alpha}=0.84-90$, confirming that the Korean version of the tool in this study was very reliable.It is important to note that this study provided basic data for the development of educational programs that can effectively control the negative emotions of clinical nurses at the organization level.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.672-681
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• 2018

This study was conducted to test the validity and reliability of the Korean version of the Professional Quality of Life Scale-Short Form (ProQOL-K-SF). Survey data were collected from 191 staff involved in long-term care insurance who worked for National Health Insurance Services. Construct validity using exploratory factor analysis and the internal consistency reliability were determined using SPSS/WIN (21.0). Factor analysis of the ProQOL-K-SF demonstrated that it has a two-factor structure (compassion satisfaction and compassion fatigues) and 13 items that support construct validity. Factor loadings of the compassion satisfaction ranged from 0.70-0.86, factor loading of the compassion fatigues ranged from 0.71-0.82 and the total variance was 60%. The ProQOL-K showed interanal consistency based on Cronbach's ${\alpha}$, with a total scale and two sub scale values of 0.76-0.90. Compassion fatigue and compassion satisfaction of 30 items of the ProQOL-K were positively correlated with those of 13 items of the ProQOL-K-SF. The results support that the ProQOL-K has satisfactory construct validity and is a reliable measure of professional quality of life in Korea.