| Análisis de consistencia interna mediante Alfa de Cronbach: un programa basado en gráficos dinámicos Internal consistency analysis by means of Cronbach’s Alpha: a computer program based on dynamic graphics</td>
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<td colspan="2" class="text5">关键词:
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"Alfa de Cronbach"'>Alfa de Cronbach</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"Visualización estadística"'>Visualización estadística</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"Gráficos dinámicos"'>Gráficos dinámicos</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"Cronbach’s Alpha"'>Cronbach’s Alpha</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"Statistical visualization"'>Statistical visualization</a>;
<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oakeywords:"Dynamic graphics"'>Dynamic graphics</a>;
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<td class="text2" colspan="2" style="color: #2575A5;">DOI : 10.1590/S1413-82712002000200003</td>
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<td colspan="2" class="text5" style="color: #2575A5;">来源:<a
href='http://oa.las.ac.cn/oainone/service/browseall/viewmore?ptype=JA&q= AND oasourcestr:"DOAJ"'>
DOAJ</a></td>
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<h6>【 摘 要 】</h6>
<p style="text-align: justify; text-indent: 2em;">
En este trabajo se presenta una herramienta informática original que permite realizar análisis de consistencia interna (modelo Alfa de Cronbach) utilizando métodos gráficos dinámicos. Se trata de un módulo basado en la filosofía del Análisis Exploratorio de Datos y en métodos de visualización estadística, diseñado para asistir al analista en el proceso de construcción de pruebas psicológicas. La herramienta permite analizar la consistencia interna de la prueba, las propiedades de los ítems que la componen, los patrones de respuesta de los sujetos a los ítems, y el efecto de la eliminación de los ítems y del incremento en la longitud de la prueba sobre su fiabilidad. En comparación con otros programas existentes, el beneficio del módulo es la incorporación de gráficos estadísticos dinámicos como complemento a la presentación de resultados convencionales en formato texto.<br>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.</p>
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