When fit indices and residuals are incompatible.
Psychol Methods
; 7(4): 403-21, 2002 Dec.
Article
em En
| MEDLINE
| ID: mdl-12530701
ABSTRACT
Standard chi-square-based fit indices for factor analysis and related models have a little known property They are more sensitive to misfit when unique variances are small than when they are large. Consequently, very small correlation residuals indicating excellent fit can be accompanied by indications of bad fit by the fit indices when unique variances are small. An empirical example of this incompatibility between residuals and fit indices is provided. For illustrative purposes, an artificial example is provided that yields exactly the same correlation residuals as the empirical example but has larger unique variances. For this example, the fit indices indicate excellent fit. A theoretical explanation for this phenomenon is provided using relationships between unique variances and eigenvalues of the fitted correlation matrix.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Psicologia
/
Estresse Psicológico
/
Modelos Psicológicos
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Psychol Methods
Assunto da revista:
PSICOLOGIA
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Estados Unidos