Psychometric Properties of the Spanish Dysexecutive Questionnaire (DEX-Sp): Equivalence in Mexico and Spain

Introduction/Objectives: Evidence of validity and reliability was obtained for the Spanish version of the Dysexecutive Questionnaire (DEX-Sp) in non-clinical samples from Mexico and Spain. Method: An exploratory factor analysis was conducted on responses from 335 adults in Mexico. Subsequently, confirmatory factor analyses and invariance testing were carried out with a sample of 726 adults from central and northern Mexico (Mean age = 25.65 years, SD = 10.61) and 214 adults from Spain (Mean age = 28.14 years, SD = 13.44). The Alcohol Use Disorders Identification Test (AUDIT) was used as an external validity criterion. Results: Adequate levels of reliability were observed, along with a unifactorial structure and configural equivalence across the four samples. Positive associations between the DEX-Sp and the AUDIT provided evidence of criterion-related validity. The exclusion of two items is discussed due to their low shared variance with the rest of the scale, suggesting they may assess aspects not constitutive of the dysexecutive syndrome. Conclusions: A unidimensional structure with adequate reliability and external validity evidence was confirmed. The results support the DEX-Sp as a valid and reliable measure of executive dysfunction in populations similar to those analysed in Mexico and Spain.