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Korean Journal of Psychology: General

ISSN : 1229-067X

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Vol.28 No.3

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A Theoretical and Empirical Comparison between Intraclass Correlation and Generalizability

Korean Journal of Psychology: General / Korean Journal of Psychology: General, (P)1229-067X; (E)2734-1127
2009, v.28 no.3, pp.659-686



& (2009). A Theoretical and Empirical Comparison between Intraclass Correlation and Generalizability. Korean Journal of Psychology: General, 28(3), 659-686.

Abstract

Researches report many different measures of reliability to establish accuracy of measurement. Intraclass correlation coefficient and generalizability theory are based on classical test theory and widely used for obtaining reliability measurement. They share some communality, however, they have different assumptions for estimation of reliability measures. If was observed that some measures rooted in different assumptions yield identical values. Also, it was found that definitions of reliability are different across different researchers in the context of intraclass correlation coefficients. In the present study we examined two studies defining the intraclass correlation differently. Also relationships between the reliability measures provided by intraclass correlation coefficient and generalizzbility theory are interpreted in the context of reliability alpha coefficient that is most widely used for a reliability measure.

keywords
신뢰도, 신뢰도 계수, 급내 상관, 일반화가능도 이론, reliability index, Cronbach의, Intraclass Correlation Coefficient, Generalizability

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