• Title/Summary/Keyword: Validity Check

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The Study of the Validity Test on the Self-monitoring Scale (자기 검색척도(Self-Monitoring Scale)의 타당성 검정에 관한 연구)

  • 이선아
    • Journal of Korean Academy of Nursing
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    • v.28 no.3
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    • pp.751-759
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    • 1998
  • The study of the validity test on the self-monitoring scale for nurses In this study, both the literary survey as well as empirical research has been executed to test the validity of the scales that measure the construct of the self-monitoring scale. The self-monitoring scale could not be classified into five factors as Snyder suggested. Many other scholars (Briggs, Cheek and Buss, 1980) suggested 3 different classifications which was accepted by Snyder and Gangestad (1986). John, Cheek and Klohnen(1996) claimed a two-factor classification. As has been discussed, factor analysis is used to prove convergent validity within the factor and discriminant validity between the factors. However, depending on the researchers, many variations in classification of the factors were found and a lack of content and discriminant validity were found in the previous research findings. It is also important to note that Snyder's self-monitoring scale did not factor-load at over. 30 for all 25 items, regardless of how many factors could be classified. According to findings of this study, the self-monitoring scale neither classified as five, three or two factors nor factor loaded as hypothesized. It is also clear that Snyder's self-monitoring scale lacks convergent validity as the sub-factors of the scale failed to prove its uni-dimensionality. The A self-monit oring scale not only fail to overcome the problems of Snyder's self-monitori ng scale but even lost the attractiveness of the self-monitoring scale. In this study it was also found that the A self-monitoring scale was not classified in either in a two or three-factor classification as hypothesized. It is, of course, not desirable to use any scale that lacks convergent and discriminant validity even though it has been widely used and has held a great deal of influence on the field of social psychology. To overcome the shortcomings of Snyder's self-monitoring scale, Lennox and Wolfe(1984) suggested 13 items. This study was dedicated to test the validity and reliability of the scale, in which we found that the data presented in validity as the two factors were class ified and loaded as expected. Reliability was also proven by checking Cronbach's α for each factor and for the total items. In addition, a confirmatory factor analysis was executed for the 13 items using LISREL 8.12 program to confirm convergent validity in a two-factor classification. The model was fitting and sound : however, the self-monitoring scale was unfitted and not validated. Thus, it is recommended to use not the original nor the abbreviated self-monitoring scale but the 13 items in future studies. It should also be noted that items 7 and 13 should be removed to obtain better uni-dimensionality for the 13 items. These items loaded at over. 30, too high for the two factors in the test results of Factor analysis. In addition, it is necessary to double-check the cause of two-hold loading at over .30 for the two factors. It could be a problem caused by data or by the scale itself. Therefore, additional studies should follow to better clarify this matter.

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Development of the 'convergence motive' scale for interdisciplinary knowledge fusion (다학제간 지식융합을 위한 '융합동기' 척도 개발 연구)

  • PARK, Sung-Mi;YANG, Hwang-Kyu
    • Journal of Fisheries and Marine Sciences Education
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    • v.27 no.6
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    • pp.1880-1890
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    • 2015
  • The purpose of this study was to development of the 'convergence motive' scale for interdisciplinary knowledge fusion. Based on results from literature review, this study clarifies a theoretical ground for 'convergence motive'. Initial items to measure this concept were verified by content analysis and then finalized. After a pilot test done with 568 college students, gathered data were analyzed by item selection and exploratory factor analysis to verify their validity. Next, the main test implemented with 1,211 college students was analyzed with exploratory factor analysis using the method for rotation based on maximum likelihood analysis and direct oblimin for validating the final items to measure 'convergence motive'. As a result, the scale for 'convergence motive' consists of 43 items to measure the following four factors: collaboration to identifying and solving problems, challenge of a new perspective, communication for convergence, cohesion for convergence. Construct validity and criterion-related validity were performed at last to check this scale's theoretical construct. In conclusion, this study concluded that the scales for convergence motive could be generalized and applicable to other samples.

Visualization in the assessment of construct validity (구성타당도 평가를 위한 시각화방법)

  • Noh, Hohsuk;Song, Ji Na;Cho, Hyeyoon
    • The Korean Journal of Applied Statistics
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    • v.29 no.2
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    • pp.381-388
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    • 2016
  • It is common to quantify the concept of interest in the social and human sciences to test a research hypothesis. In such a case, it is strongly recommended to investigate if the procedure is appropriately designed and implemented according the research purpose since the quantification procedure highly affects the result of statistical analysis. In this work, we propose a visualization tool which enables us to check the construct validity of a measurement tool (such a questionnaire) in a concise and convenient way based on a penalized factor analysis model. We illustrate our method with numerical simulation and real data analysis.

Modeling of absorption coefficient and transition energy for intersubband transitions in quantum wells (양자우물에서의 전자의 에너지 부준위간 천이에 의한 광자의 흡수계수와 천이 에너지의 모델링)

  • 김경염;이병호;이찬호
    • Journal of the Korean Institute of Telematics and Electronics D
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    • v.35D no.8
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    • pp.44-52
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    • 1998
  • The theoretical modeling of transition energy and absorption coefficient for intersubband transitions in quantum wells in presented. We include, as well as hartree and exchange-correlation potentials, boht depolarization effect and exciton-like effect which play great roles in heavily doped cases where practically reasonable absorption coefficients are available. Also, the calculated results are compared with the existing experimental values for .delta.-doped Si quantum wells to check the validity of our theoretical calculation.

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Normal Mode Vibrations of a Beam with a Nonlinear Boundary Condition (비선형 경계조건을 가진 보의 정규모드진동)

  • 김현기;이원경
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 1998.04a
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    • pp.392-398
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    • 1998
  • In order to check the validity of nonlinear normal modes of continuous, systems by means of the energy-based formulation, we consider a beam with a nonlinear boundary condition. The initial and boundary e c6nsl of a linear partial differential equation and a nonlinear boundary condition is reduced to a linear boundary value problem consisting of an 8th order ordinary differential equations and linear boundary conditions. After obtaining the asymptotic solution corresponding to each normal mode, we compare this with numerical results by the finite element method.

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A Study on Survey Questionnaire to Measure the Knowledge Level of the Foodborne Disease

  • Bae, Wha-Soo;Kim, Jung-In;Choi, Kook-Lyeol;Kim, Byung-Soo;Cho, Young-Joon;Oh, Dong-Kwan
    • Journal of the Korean Data and Information Science Society
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    • v.19 no.1
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    • pp.37-51
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    • 2008
  • In this article, the aim is at evaluating the knowledge level of the foodbome disease by developing a reasonable survey questionnaire model. Each questions of the questionnaire is made up to check the knowledge covering the several fields of materials related to the foodbome disease. The pilot survey is implemented to evaluate the validity of questionnaire. Each question in questionnaire is scored to get the quantitative measure of the foodbome disease knowledge by converting the total score into 100 points.

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A Study on Error Detection Algorithm of COD Measurement Machine

  • Choi, Hyun-Seok;Song, Gyu-Moon;Kim, Tae-Yoon
    • Journal of the Korean Data and Information Science Society
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    • v.18 no.4
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    • pp.847-857
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    • 2007
  • This paper provides a statistical algorithm which detects COD (chemical oxygen demand) measurement machine error on real-time. For this we propose to use regression model fitting and check its validity against the current observations. The main idea is that the normal regression relation between COD measurement and other parameters inside the machine will be violated when the machine is out of order.

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A Study on the Effect of Neighboring Protons in Proton-Coupled Spin-Lattice Relaxation of Methylene Carbon-13 in n-Undecane

  • Kim, Chul;Lee, Jo-Woong
    • Bulletin of the Korean Chemical Society
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    • v.23 no.5
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    • pp.727-735
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    • 2002
  • Proton coupled carbon-13 relaxation experiment was performed to investigate the effect of vicinal protons on spin-lattice relaxation of methylene carbon-13 in n-undecane. A BIRD type pulse sequence was employed as a way to check the validity of describing the 13CH2 moiety as an isolated AX2 spin system. The results show that the presence of vicinal protons exerts substantial influence on the relaxation of methylene carbon-13, indicating that it is not a very good approximation to treat a methylene moiety as an isolated AX2 spin system.

On the Visualization of Turbulent Structures Using CFD Technique (CFD 데이터를 이용한 난류구조의 가시화)

  • Na Yang
    • Journal of the Korean Society of Visualization
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    • v.2 no.2
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    • pp.20-24
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    • 2004
  • Recent advances in CFD technique along with a rapid growth of computer resources provide valuable opportunities for developing an accurate way of visualizing turbulent structures. Not only this visualization technique made it possible to check the validity of many of theoretical achievements of the past but also it pushes the current turbulence research to a new paradigm. A brief history of visualization study will be summarized and discussed.

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Analysis method for the annular slot radiator in a metal-backed cylindrical cavity (금속으로 이루어진 원통형 공진기 윗면에 위치한 환형슬롯 복사기에 대한 해석방법)

  • 조영기;윤리호;이종익;홍재표;신현진
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.32A no.12
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    • pp.74-79
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    • 1995
  • A theoretical method has been considered for the analysis of an annular slot radiator in a metal-backed cylindrical cavity with coaxial feed. In order to check the validity of the method theoretical values of the input return loss and radiation pattern are compared with experimental values. There is good agreement between them.

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