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Ventajas de los Modelos Politómicos de Teoría de Respuesta al Ítem en la Medición de Actitudes Sociales. El Análisis de un Caso.
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- Author(s): Asún, Rodrigo1 ; Zúñiga, Claudia1
- Source:
Psykhe. nov2008, Vol. 17 Issue 2, p103-115. 13p. 3 Charts, 5 Graphs. - Source:
- Additional Information
- Alternate Title: Advantages of Polytomous Models of Item Response Theory in Measuring Social Attitudes. A Case Study.
- Subject Terms:
- Abstract: Despite its advantages in psychometric research, Item Response Theory (IRT) has not been regularly used in the measurement of psychological constructs or social attitudes. This study used a scale of intolerance to demonstrate the usefulness of working with polytomous models of IRT in comparison with the Classical Test Theory to study attitudes. It is concluded that the advantages of the polytomous models of IRT are found not in the form in which the people are scaled or in the estimation of item parameters, but in obtaining better information of the psychometric proprieties of an instrument, information that can be used to improve the instrument. [ABSTRACT FROM AUTHOR]
- Abstract: A pesar de sus ventajas en la investigación psicométrica, la Teoría de Respuesta al Ítem (TRI) no ha logrado imponerse en la práctica cotidiana de medición de constructos psicológicos o actitudes sociales. En esta investigación se muestra la utilidad de trabajar con modelos de TRI politómicos a través de su comparación con la Teoría Clásica, al estudiar el comportamiento de una escala de intolerancia. Se concluye que las ventajas de los modelos politómicos de la TRI no se encuentran en la forma en que escalan a los individuos ni en la estimación de los parámetros de los ítems, sino en la obtención de mayor información respecto al funcionamiento del instrumento, que podría ser utilizado para su mejoramiento futuro. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Psykhe is the property of Escuela de Psicologia de la Pontificia Universidad Catolica de Chile and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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