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Is it quality, is it redundancy, or is model inadequacy? Some strategies for judging the appropriateness of high-discrimination items

  • Dades identificatives

    Identificador: imarina:9329488
    Autors:
    Ferrando, Pere JMorales-Vives, Fabia
    Resum:
    When developing new questionnaires, it is traditionally assumed that the items should be as discriminative as possible, as if this was always indicative of their quality. However, in some cases these high discriminations may be masking some problems such as redundancies, shared residuals, biased distributions, or model limitations which may contribute to inflate the discrimination estimates. Therefore, the inspection of these indices may lead to erroneous decisions about which items to keep or eliminate. To illustrate this problem, two different scenarios with real data are described. The first focuses on a questionnaire that contains an item apparently highly discriminant, but redundant. The second focuses on a clinical questionnaire administered to a community sample, which gives place to highly right-skewed item response distributions and inflated discriminant indices, despite the items do not discriminate well among the majority of participants. We propose some strategies and checks to identify these situations, so that the items that are inappropriate may be identified and removed. Therefore, this article seeks to promote a critical attitude, which may involve going against routine stablished principles when they are not appropriate.
  • Altres:

    Autor segons l'article: Ferrando, Pere J; Morales-Vives, Fabia
    Departament: Psicologia
    Autor/s de la URV: Ferrando Piera, Pere Joan / Morales Vives, Fàbia
    Paraules clau: Item response theory Item redundancy Item discrimination Item analysis Factor analysis Clinical measurement item response theory item redundancy item analysis inventory factor analysis clinical measurement
    Resum: When developing new questionnaires, it is traditionally assumed that the items should be as discriminative as possible, as if this was always indicative of their quality. However, in some cases these high discriminations may be masking some problems such as redundancies, shared residuals, biased distributions, or model limitations which may contribute to inflate the discrimination estimates. Therefore, the inspection of these indices may lead to erroneous decisions about which items to keep or eliminate. To illustrate this problem, two different scenarios with real data are described. The first focuses on a questionnaire that contains an item apparently highly discriminant, but redundant. The second focuses on a clinical questionnaire administered to a community sample, which gives place to highly right-skewed item response distributions and inflated discriminant indices, despite the items do not discriminate well among the majority of participants. We propose some strategies and checks to identify these situations, so that the items that are inappropriate may be identified and removed. Therefore, this article seeks to promote a critical attitude, which may involve going against routine stablished principles when they are not appropriate.
    Àrees temàtiques: Saúde coletiva Revistas ciencias del comportamiento Psychology, multidisciplinary Psychology (miscellaneous) Psychology (all) Psychology Psicología Medicina i General psychology Educação Ciencias sociales
    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 fabia.morales@urv.cat
    Identificador de l'autor: 0000-0002-3133-5466 0000-0002-2095-0244
    Data d'alta del registre: 2024-10-12
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://revistas.um.es/analesps/article/view/535781
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Anales De Psicologia. 39 (3): 517-527
    Referència de l'ítem segons les normes APA: Ferrando, Pere J; Morales-Vives, Fabia (2023). Is it quality, is it redundancy, or is model inadequacy? Some strategies for judging the appropriateness of high-discrimination items. Anales De Psicologia, 39(3), 517-527. DOI: 10.6018/analesps.535781
    DOI de l'article: 10.6018/analesps.535781
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2023
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Psychology,Psychology (Miscellaneous),Psychology, Multidisciplinary
    Item response theory
    Item redundancy
    Item discrimination
    Item analysis
    Factor analysis
    Clinical measurement
    item response theory
    item redundancy
    item analysis
    inventory
    factor analysis
    clinical measurement
    Saúde coletiva
    Revistas ciencias del comportamiento
    Psychology, multidisciplinary
    Psychology (miscellaneous)
    Psychology (all)
    Psychology
    Psicología
    Medicina i
    General psychology
    Educação
    Ciencias sociales
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