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Análisis de consistencia interna mediante Alfa de Cronbach: un programa basado en gráficos dinámicos

2002; Universidade de São Francisco; Volume: 7; Issue: 2 Linguagem: Inglês

2175-3563

Rubén Daniel Ledesma, Gabriel Molina Ibañez, Pedro Valero Mora,

Psychometric Methodologies and Testing

This paper describes a computer software that provides dynamic graphics to perform internal consistence analysis by means of Cronbach’s Alpha. This software, based on Exploratory Data Analysis philosophy and statistical visualization methods, is designed to assist the process of psychological test and scale construction. It allows carry out internal consistency analysis, as well as exploring statistical properties of items, subject responses patterns, and the effect of item deletion and test length increase on reliability coefficient. Comparing with other statistical software, the benefit of this program is to use dynamic graphics complementing statistical output.