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Relevance and advantages of using the item response theory |
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| Authors: | Silvana Ligia Vincenzi Bortolotti Rafael Tezza Dalton Francisco de Andrade Antonio Cezar Bornia Afonso Farias de Sousa Júnior |
| Affiliation: | 1. Federal Technological University of Paraná, Campus Medianeira, Avenida Brasil, 4232, PO Box 271, Medianeira, PR, CEP 85884-000, Brazil 2. Department of Business Administration, Santa Catarina State University, Av. Madre Benvenuta, 2037, Itacorubi, Florianópolis, SC, Brazil 3. Informatics and Statistics Department, Federal University of Santa Catarina, Campus Universitário/CTC/INE, Trindade, SC, Brazil 4. Production Engineering Department, Federal University of Santa Catarina, Campus Universitário/CTC/EPS, PO Box 476, Trindade, SC, Brazil 5. Air Force University, Av. Mal. Fontelnelle, 1200, Rio de Janeiro, RJ, Brazil |
| Abstract: | The item response theory (IRT) also known as latent trait theory, is used for the development, evaluation and administration of standardized measurements; it is widely used in the areas of psychology and education. This theory was developed and expanded for over 50 years and has contributed to the development of measurement scales of latent traits. This paper presents the basic and fundamental concepts of this IRT and a practical example of the construction of scales is proposed to illustrate the feasibility, advantages and validity of IRT through a known measurement, the height. The results obtained with the practical application of IRT confirm its effectiveness in the evaluation of latent traits. |
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