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The Impact of Measurement Model Misspecification on Coefficient Omega Estimates of Composite Reliability. [PDF]
Educ Psychol Meas, 2023 Coefficient omega indices are model-based composite reliability estimates that have become increasingly popular. A coefficient omega index estimates how reliably an observed composite score measures a target construct as represented by a factor in a factor-analysis model; as such, the accuracy of omega estimates is likely to depend on correct model ...
Bell SM, Chalmers RP, Flora DB.
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A Comparison of Composite Reliability Estimators: Coefficient Omega Confidence Intervals in the Current Literature. [PDF]
Educ Psychol Meas, 2016 Coefficient omega and alpha are both measures of the composite reliability for a set of items. Unlike coefficient alpha, coefficient omega remains unbiased with congeneric items with uncorrelated errors. Despite this ability, coefficient omega is not as widely used and cited in the literature as coefficient alpha.
Padilla MA, Divers J.
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Overestimation of Internal Consistency by Coefficient Omega in Data Giving Rise to a Centroid-Like Factor Solution. [PDF]
Educ Psychol MeasCoefficient Omega measuring internal consistency is investigated for its deviations from expected outcomes when applied to correlational patterns that produce variable-focused factor solutions in confirmatory factor analysis. In these solutions, the factor loadings on the factor of the one-factor measurement model closely correspond to the correlations
Schweizer K, Wang T, Ren X.
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Typology of Deflation-Corrected Estimators of Reliability
Frontiers in Psychology, 2022 The reliability of a test score is discussed from the viewpoint of underestimation of and, specifically, deflation in estimates or reliability. Many widely used estimators are known to underestimate reliability.
Jari Metsämuuronen, Jari Metsämuuronen
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Development and validation of a stress response measure: the Daily Stress Response Scale (DSRS)
Health Psychology Report, 2022 Background To date, there is a lack of measures for capturing a broad spectrum of psychophysiological stress reactions that can be administered on a daily basis and in different contexts.
Agata Debowska +4 more
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Frontiers in Psychology, 2021 In the context of multidimensional structures, with the presence of a common factor and multiple specific or group factors, estimates of reliability require specific estimators. The use of classical procedures such as the alpha coefficient or omega total
Italo Trizano-Hermosilla +4 more
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Electronic Journal of Qualitative Theory of Differential Equations, 2021 The paper studies the existence, exact multiplicity, and a structure of the set of positive solutions to the periodic problem $$ u''=p(t)u+q(t,u)u+f(t);\quad u(0)=u(\omega),\ u'(0)=u'(\omega), $$ where $p,f\in L([0,\omega])$ and $q\colon[0,\omega ...
Jiří Šremr
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Testing the Difference Between Reliability Coefficients Alpha and Omega [PDF]
Educational and Psychological Measurement, 2016 Reliable measurements are key to social science research. Multiple measures of reliability of the total score have been developed, including coefficient alpha, coefficient omega, the greatest lower bound reliability, and others. Among these, the coefficient alpha has been most widely used, and it is reported in nearly every study involving the measure
Lifang, Deng, Wai, Chan
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International Journal of Bipolar Disorders, 2022 Background Research suggests that a low omega-3 index may contribute to the low heart rate variability and the increased risk of cardiovascular morbidity and mortality in bipolar disorders. However, so far, no intervention trial with EPA and DHA has been
Michael Berger +8 more
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On a geometric approach to the estimation of interpolation projectors
Моделирование и анализ информационных систем, 2023 Suppose $\Omega$ is a closed bounded subset of ${\mathbb R}^n,$ $S$ is an $n$-dimensional non-degenerate simplex, $\xi(\Omega;S):=$ min {$\sigma\geqslant 1: \Omega\subset \sigma S$}.
Mikhail V. Nevskii, Alexey Y. Ukhalov
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