Un viaje alrededor de alfa y omega para estimar la fiabilidad de consistencia interna

<p>Based on recent psychometric developments, this paper presents a conceptual and practical guide for estimating internal consistency reliability of measures obtained as item sum or mean. The internal consistency reliability coefficient is presented as a by-product of the measurement model underlying the item responses. A three-step procedure is proposed for its estimation, including descriptive data analysis, test of relevant measurement models, and computation of internal consistency coefficient and its confidence interval. Provided formulas include: (a) Cronbach’s alpha and omega coefficients for unidimensional measures with quantitative item response scales, (b) coefficients ordinal omega, ordinal…

• GD
  Generalitat de Catalunya
• MD
  Ministerio de Economía y Competitividad

  Award: DEP2014-52481-C3-1-R
• AD
  Agència de Gestió d'Ajuts Universitaris i de Recerca

  Award: 2014 SGR 224