Psychometric Properties of the Spanish version of the Detail and Flexibility Questionnaire (DFlex)
Abstract
Abstract Backgroud: Cognitive inflexibility and deficits in central coherence are well-established endophenotypic traits in eating disorders (EDs), significantly impacting clinical outcomes and therapeutic engagement To assess these dimensions, the Detail and Flexibility Questionnaire (DFlex) was developed and validated in several languages. The aim of this study was to validate the Spanish version of the DFlex in individuals with EDs and in general population, examining its psychometric properties and ensuring its reliability and validity. Methods confirmatory factor analyses, internal consistency, predictive and concurrent validity estimates were conducted within individuals with a diagnosis of an eating disorder (n = 113) and individuals from general population (n = 175). Results The original 24-item version showed inadequate fit. Following a systematic refinement process based on statistical performance and content validity, a 10-item brief version (5 items per subscale) was developed. The Spanish DFlex-brief demonstrated satisfactory model fit, adequate internal consistency (α and ω > .70), and significant correlations with conceptually related measures (e.g., perfectionism, cognitive flexibility). Furthermore, it effectively distinguished between clinical and general populations, with a 67.9% correct classification rate. Discussion The Spanish DFlex-brief is a reliable and valid tool for assessing cognitive rigidity and attention to detail. Its brevity and ease of…
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