Adaptation and validation of the Dietarian Identity Questionnaire (DIQ) into the Spanish context ( Adaptación y validación al contexto español del Cuestionario de Identidad Alimentaria

Abstract

Spanish

The aim of this study is to adapt and validate the Dietarian Identity Questionnaire (DIQ) into the Spanish context. In an initial study, a confirmatory factor analysis was performed, obtaining good validity and goodness-of-fit indices (CMIN/DF = 2.026; CFI = .976; NNFI = .972; SRMR = .054 and RMSEA = .057). In a second study, evidence of validity based on the relationship with other variables was analysed using the ‘Meaning of Food in Life’ questionnaire. Correlations were made and differences between people with a vegan (N = 43), vegetarian (N = 44) and omnivorous (N = 115) diet were analysed. The results indicate that vegans and vegetarians differ from omnivores in all identity factors (p = ≤ .001). In addition, differences were found between vegans and vegetarians in the Public Regard (p = .035), Outgroup Regard (p = .036) and Moral Motivation (p = .036) factors. DIQ is a good instrument that can be used in studies on food choices and sustainability.

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Adaptation and validation of the Dietarian Identity Questionnaire (DIQ) into the Spanish context ( Adaptación y validación al contexto español del Cuestionario de Identidad Alimentaria — DIQ )

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