• Corpus ID: 144089660

Aproximación al uso del coeficiente alfa de Cronbach

@article{Oviedo2005AproximacinAU,
  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},
  year={2005},
  volume={34},
  pages={572-580}
}
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

Abstract The purpose of this research was to evaluate the internal consistency, the test-retest reliability and the construct validity of the Frost Multidimensional Perfectionism Scale (FMPS) in

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

Diseño y validación de instrumentos de medición

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

Perfeccionismo, bienestar psicológico y disposición a fluir en enfermeras

The objective of this research was to evaluate the relationship between perfectionism, psychological well-being and dispositional flow in nurses. A quantitative study with descriptive-correlational

Psychometric parameters of the subscale of hostility from the Symptom Checklist 90 (SCL-90)

Abstract The present study aimed to know the psychometric parameters of the SCL-90 hostility scale. For this, two studies were traced; In Study 1, 209 students, mean age 16 years (SD = 1.29), who

Posttraumatic Growth Inventory (PTGI): Adaptação e Validade Fatorial no Nordeste Brasileiro

This study aimed to verify the psychometric parameters of the Posttraumatic Growth Inventory PTGI, presenting evidence of factorial validity, internal consistency and steps of cross-cultural

Validación de una escala de conocimiento sobre estudiantes con aptitudes sobresalientes de nivel medio superior

The aim of this study was the design and validation of a scale to assess knowledge of Gifted high school students, which was called Knowledge Scale of Gifted students. It was grouped in three

Estimadores de consistencia interna en las investigaciones en salud: el uso del coeficiente alfa

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
...

References

SHOWING 1-10 OF 36 REFERENCES

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.

Focus on Psychometrics. Coefficient alpha: Conceptualizations and anomalies

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,

DSM-IV: empirical guidelines from psychometrics.

This commentary addresses the use of psychometric theory and methodology in the development of the 4th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV). Reliability

Conceptos básicos sobre validación de escalas

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

Correction for Unreliability of Multifactor Measures: Comparison of Alpha and Parallel Forms Approaches

Coefficient alpha is a widely used and useful index of reliability, but it provides an inappropriate estimate of reliability when used with multidimensional composites. The problematic nature of this

Construct validity in psychological tests.

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.

Validating scales and indexes

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

Coefficient alpha and the internal structure of tests

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

Beyond alpha: an empirical examination of the effects of different sources of measurement error on reliability estimates for measures of individual differences constructs.

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