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From alpha to omega: A practical solution to the pervasive problem of internal consistency estimation

Dunn, Thomas J. ; Baguley, Thom ; Brunsden, Vivienne

The British journal of psychology, 2014-08, Vol.105 (3), p.399-412 [Periódico revisado por pares]

Leicester: Blackwell Publishing Ltd

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Título:
From alpha to omega: A practical solution to the pervasive problem of internal consistency estimation
Autor: Dunn, Thomas J. ; Baguley, Thom ; Brunsden, Vivienne
Assuntos: Alternatives ; Biological and medical sciences ; Coefficient alpha ; Coefficients ; Data Interpretation, Statistical ; Estimation ; Fundamental and applied biological sciences. Psychology ; Humans ; Open source software ; Psychological factors ; Psychology. Psychoanalysis. Psychiatry ; Psychology. Psychophysiology ; Psychometrics ; Psychometrics - methods ; Psychometrics - standards ; Psychometrics. Statistics. Methodology ; Quantitative psychology ; Reliability ; Reproducibility of Results ; Social psychology ; Statistics. Mathematics
É parte de: The British journal of psychology, 2014-08, Vol.105 (3), p.399-412
Notas: ark:/67375/WNG-SKNFDBLK-V
Data S1. A copy of the SES data file for the worked example in this paper in both SPSS (.sav) and comma separated variable (.csv) format. R script. An annotated R script reproducing the worked example in this paper.
ArticleID:BJOP12046
ESRC - No. ES/G036926/1; No. RES-062-23-1414
istex:ABD0FDED923CF7622784E1EB5B1C4E4CA45147E0
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Descrição: Coefficient alpha is the most popular measure of reliability (and certainly of internal consistency reliability) reported in psychological research. This is noteworthy given the numerous deficiencies of coefficient alpha documented in the psychometric literature. This mismatch between theory and practice appears to arise partly because users of psychological scales are unfamiliar with the psychometric literature on coefficient alpha and partly because alternatives to alpha are not widely known. We present a brief review of the psychometric literature on coefficient alpha, followed by a practical alternative in the form of coefficient omega. To facilitate the shift from alpha to omega, we also present a brief guide to the calculation of point and interval estimates of omega using a free, open source software environment.
Editor: Leicester: Blackwell Publishing Ltd
Idioma: Inglês

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From alpha to omega: A practical solution to the pervasive problem of internal consistency estimation

Dunn, Thomas J. ; Baguley, Thom ; Brunsden, Vivienne

Leicester: Blackwell Publishing Ltd

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