• Corpus ID: 144089660

Aproximación al uso del coeficiente alfa de Cronbach

  title={Aproximaci{\'o}n al uso del coeficiente alfa de Cronbach},
  author={Heidi Celina Oviedo and Adalberto Campo-Arias},
  journal={Revista Colombiana de Psiquiatr{\'i}a},
Introduction: Scales are frequently used in clinical and research psychiatry. However, scales must be validated in order to know their psychometric properties when they are administered to special populations. Description: Establishing the internal consistency of a scale is an approach to validate its construct. That is, the quantification of the correlation among the items includes in a scale. Cronbach' alpha values between 0.70 and 0.90 suggest a good internal consistency. The Cronbach' alpha… 

Consistencia interna, confiabilidad test-retest y validez de constructo de la Escala Multidimensional de Perfeccionismo de Frost

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Modificación Horst al Coeficiente KR - 20 por Dispersión de la Dificultad de los Ítems

The KR – 20 equation is a well-known technique for internal consistency reliability, and is a special case for dichotomous items from the formulation of alpha Cronbach’s coefficient. However, it is

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This article is addressed to those people at the university developing research as part of their postgraduate studies and those novice researchers from the academy regarding validation of measurement instruments.

Construcción y validación de escalas de medición en salud: revisión de propiedades psicométricas Construction and validation of measurement scales in health: a review of psychometric properties

Available information about the process of building, adaptation and validation of scales in health is limited, dispersed and in some cases incomplete; therefore the objective of this text is to

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Academic production has increased in the area of health, increasingly demanding high quality in publications of great impact. One of the ways to consider quality is through methods that increase the



Being Inconsistent About Consistency: When Coefficient Alpha Does and Doesn't Matter

  • D. Streiner
  • Psychology
    Journal of personality assessment
  • 2003
This article distinguishes between questionnaires such as anxiety or depression inventories, which are composed of items that are manifestations of an underlying hypothetical construct, and those used to tap quality of life or activities of daily living, which meet the criteria of classical test theory.

Starting at the Beginning: An Introduction to Coefficient Alpha and Internal Consistency

  • D. Streiner
  • Psychology
    Journal of personality assessment
  • 2003
The historical development of a from other indexes of internal consistency (split-half reliability and Kuder-Richardson 20) and four myths associated with a are discussed, including that it is a fixed property of the scale and that higher values are always preferred over lower ones.

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In this article distinctions are made among some of the different conceptualizations of, and formulas for, Cronbach's coefficient alpha as it is applied to dichotomous or nondi-chotomous,

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Este articulo proporciona una introduccion general para la evaluacion y validacion de escalas en la practica clinica e ilustra los pasos para este proceso. Se discuten en el articulo los conceptos

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The present interpretation of construct validity is not "official" and deals with some areas where the Committee would probably not be unanimous, but the present writers are solely responsible for this attempt to explain the concept and elaborate its implications.

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An index of quality is a measurement like any other, whether it is assessing a website, as in today's BMJ ,1 a clinical trial used in a meta-analysis,2 or the quality of a life experienced by a

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AbstractA general formula (α) of which a special case is the Kuder-Richardson coefficient of equivalence is shown to be the mean of all split-half coefficients resulting from different splittings of

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The authors conclude that transient error exists in all 3 trait domains and is especially large in the domain of affective traits.