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Longitudinale McDonald's omega×Confirmatory factor analysis×Cronbach's Alpha (Betrouwbaarheidsanalyse)×Test-hertest betrouwbaarheid×
VakgebiedPsychometriePsychometrieStatistiekPsychometrie
FamilieLatent structureLatent structureLatent structureLatent structure
Jaar van ontstaan1999 (original omega); 2014 (longitudinal extension)196919511904
GrondleggerMcDonald (1999); extended to longitudinal contexts by Geldhof, Preacher, and Zyphur (2014) and subsequent authorsKarl Gustav JöreskogLee J. CronbachKarl Pearson
TypeReliability / internal consistency coefficientHypothesis-testing latent variable modelReliability / internal consistency coefficientReliability estimate
Oorspronkelijke bronMcDonald, R. P. (1999). Test Theory: A Unified Treatment. Lawrence Erlbaum Associates. ISBN: 978-0805830(textbook)Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34(2), 183–202. DOI ↗Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334. DOI ↗Nunnally, J. C. & Bernstein, I. H. (1994). Psychometric Theory (3rd ed.). McGraw-Hill. ISBN: 978-0070478497
Aliassenlongitudinal omega, omega longitudinal reliability, time-varying omega, repeated-measures omegaCFA, confirmatory FA, measurement model, restricted factor analysiscoefficient alpha, alpha reliability, internal consistency reliability, Güvenilirlik Analizi (Cronbach Alpha)stability reliability, temporal stability, repeatability coefficient, TRT reliability
Verwant3444
SamenvattingLongitudinal McDonald's omega estimates scale reliability separately at each measurement occasion in a panel or repeated-measures study. By fitting a confirmatory factor model at each wave, it tracks how consistently a set of items measures its target construct over time, detecting erosion or improvement in measurement quality that a single omnibus reliability coefficient would obscure.Confirmatory factor analysis tests a researcher-specified factor structure against observed data. Unlike exploratory approaches, the researcher decides in advance which indicators load on which latent factor, and the model is evaluated by how closely the implied covariance matrix reproduces the sample covariance matrix. CFA is central to scale validation, construct validity assessment, and measurement invariance testing.Cronbach's alpha is a coefficient of internal consistency that quantifies the degree to which a set of items on a scale measures the same underlying construct. Introduced by Lee J. Cronbach in 1951, it remains the most widely reported reliability index in social-science, health, and educational research.Test-retest reliability quantifies the temporal consistency of a measure by correlating scores obtained from the same participants on two separate occasions. It is a cornerstone of psychometric validation, directly indicating whether a scale or instrument yields stable scores when the underlying construct has not changed.
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ScholarGateMethoden vergelijken: Longitudinal McDonald's omega · Confirmatory factor analysis · Cronbach's Alpha · Test-Retest Reliability. Geraadpleegd op 2026-06-19 via https://scholargate.app/nl/compare