Sandra Freitas1,2,3, Gerardo Prieto4, Mário R Simões1,3, Joana Nogueira1, Isabel Santana2,5,6, Cristina Martins3,7,8, Lara Alves1,3. 1. a Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo Comportamental (CINEICC) , University of Coimbra , Coimbra , Portugal. 2. b Centre for Neuroscience and Cell Biology (CNC) , University of Coimbra , Coimbra , Portugal. 3. c Psychological Assessment Lab., Faculty of Psychology and Educational Sciences , University of Coimbra , Coimbra , Portugal. 4. d Departamento de Psicología Básica, Psicobiología y Metodología de las Ciencias del Comportamiento , Universidad de Salamanca , Salamanca , Spain. 5. e Neurology Unit , Centro Hospitalar e Universitário de Coimbra , Coimbra , Portugal. 6. f Faculty of Medicine , University of Coimbra , Coimbra , Portugal. 7. g Faculty of Arts and Humanities , University of Coimbra , Coimbra , Portugal. 8. h Centre for the Study of General and Applied Linguistics (CELGA-ILTEC) , University of Coimbra , Coimbra , Portugal.
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.
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.