Articles producció científica> Psicologia

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]

  • Identification data

    Identifier: imarina:9285296
    Handle: https://hdl.handle.net/20.500.11797/imarina9285296
    Authors:
    Ferrando, Pere JAnguiano-Carrasco, Cristina
    Abstract:
    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.

  • Others:

    Author, as appears in the article.: Ferrando, Pere J; Anguiano-Carrasco, Cristina
    Department: Psicologia
    URV's Author/s: ANGUIANO CARRASCO, CRISTINA / Ferrando Piera, Pere Joan
    Keywords: Tests Score Rasch analysis Questionnaire Person fit Level Indexes Factor-analysis model Continuous item responses Ability estimation
    Abstract: 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.
    Thematic Areas: Statistics and probability Psychology, experimental Psychology (miscellaneous) Psicología Experimental and cognitive psychology Developmental and educational psychology Ciencias sociales Ciencias humanas Arts and humanities (miscellaneous)
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: perejoan.ferrando@urv.cat
    Author identifier: 0000-0002-3133-5466
    Record's date: 2024-10-12
    Papper version: info:eu-repo/semantics/publishedVersion
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Psicologica. 34 (2): 383-406
    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
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2013
    Publication Type: Journal Publications

  • Keywords:

    Arts and Humanities (Miscellaneous),Developmental and Educational Psychology,Experimental and Cognitive Psychology,Psychology (Miscellaneous),Psychology, Experimental,Statistics and Probability
    Tests
    Score
    Rasch analysis
    Questionnaire
    Person fit
    Level
    Indexes
    Factor-analysis model
    Continuous item responses
    Ability estimation
    Statistics and probability
    Psychology, experimental
    Psychology (miscellaneous)
    Psicología
    Experimental and cognitive psychology
    Developmental and educational psychology
    Ciencias sociales
    Ciencias humanas
    Arts and humanities (miscellaneous)

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