Autor segons l'article: Ferrando, Pere J; Anguiano-Carrasco, Cristina
Departament: Psicologia
Autor/s de la URV: ANGUIANO CARRASCO, CRISTINA / Ferrando Piera, Pere Joan
Paraules clau: Tests Score Rasch analysis Questionnaire Person fit Level Indexes Factor-analysis model Continuous item responses Ability estimation
Resum: The present study has two main interests. First, some pending issues about the psychometric properties of the CTAC (an anxiety questionnaire for blind and visually-impaired people) are assessed using item response theory (IRT). Second, the linear model is compared to the graded response model (GRM) in terms of measurement precision, sensitivity to change, and person fit, and the results are also used to illustrate the functioning and advantages of IRT models. The participants were 670 blind or visually-impaired people from different Spanish cities. The results showed that the CTAC scores are accurate enough for practical purposes, and that respondents are quite consistent in their responses. Model-data fit was acceptable in both cases, and both models lead to similar results regarding the trait estimates, with the exception of extreme respondents who were better assessed with the linear model. The GRM assessed measurement precision better, and both models showed high sensitivity to change around cut-off values. Person-fit results were also similar in both models.
Àrees temàtiques: Statistics and probability Psychology, experimental Psychology (miscellaneous) Psicología Experimental and cognitive psychology Developmental and educational psychology Ciencias sociales Ciencias humanas Arts and humanities (miscellaneous)
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: perejoan.ferrando@urv.cat
Identificador de l'autor: 0000-0002-3133-5466
Data d'alta del registre: 2024-10-12
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Psicologica. 34 (2): 383-406
Referència de l'ítem segons les normes APA: Ferrando, Pere J; Anguiano-Carrasco, Cristina (2013). Measuring anxiety in visually-impaired people: A comparison between the linear and the nonlinear IRT approaches [Evaluación de la ansiedad en deficientes visuales. Una comparación entre modelos lineales y no lineales de TRI]. Psicologica, 34(2), 383-406
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2013
Tipus de publicació: Journal Publications
Repositori URV