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The Clinical Neuropsychologist Volume 32, 2018 - Issue sup1
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Articles

Using the Rasch analysis for the psychometric validation of the Irregular Word Reading Test (TeLPI): A Portuguese test for the assessment of premorbid intelligence

Sandra FreitasCentro de Investigação do Núcleo de Estudos e Intervenção Cognitivo Comportamental (CINEICC), University of Coimbra, Coimbra, Portugal;Centre for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal;Psychological Assessment Lab., Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, PortugalCorrespondence[email protected]
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Gerardo PrietoDepartamento de Psicología Básica, Psicobiología y Metodología de las Ciencias del Comportamiento, Universidad de Salamanca, Salamanca, Spain
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Mário R. SimõesCentro de Investigação do Núcleo de Estudos e Intervenção Cognitivo Comportamental (CINEICC), University of Coimbra, Coimbra, Portugal;Psychological Assessment Lab., Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
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Joana NogueiraCentro de Investigação do Núcleo de Estudos e Intervenção Cognitivo Comportamental (CINEICC), University of Coimbra, Coimbra, PortugalORCID Iconhttp://orcid.org/0000-0002-4065-0986
ORCID Icon,
Isabel SantanaCentre for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal;Neurology Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal;Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Cristina MartinsPsychological Assessment Lab., Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal;Faculty of Arts and Humanities, University of Coimbra, Coimbra, Portugal;Centre for the Study of General and Applied Linguistics (CELGA-ILTEC), University of Coimbra, Coimbra, Portugal
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Lara AlvesCentro de Investigação do Núcleo de Estudos e Intervenção Cognitivo Comportamental (CINEICC), University of Coimbra, Coimbra, Portugal;Psychological Assessment Lab., Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
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Pages 60-76 | Received 12 Oct 2017, Accepted 17 Apr 2018, Published online: 03 May 2018
 
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Abstract

Objective: The present study aims to analyze the psychometric characteristics of the TeLPI (Irregular Words Reading Test), a Portuguese premorbid intelligence test, using the Rasch model for dichotomous items. Results: The results reveal an overall adequacy and a good fit of values regarding both items and persons. A high variability of cognitive performance level and a good quality of the measurements were also found. The TeLPI has proved to be a unidimensional measure with reduced DIF effects. Conclusions: The present findings contribute to overcome an important gap in the psychometric validity of this instrument and provide good evidence of the overall psychometric validity of TeLPI results.

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