Psychometric properties of the Attitudes Toward Intellectual Disability Questionnaire – Short Form in the Spanish population

INTRODUCTION. Negative attitudes toward individuals with intellectual disabilities continue to be widespread in contemporary societies, acting as significant barriers to full social inclusion and personal development. Understanding public perceptions and their underlying dimensions is essential for designing effective educational interventions and policies aimed at promoting acceptance, equity, and social justice. To achieve this, valid and reliable assessment tools are required. While several instruments have been developed internationally, there is currently no widely validated short-form tool for assessing attitudes toward intellectual disabilities within the Spanish context. In response to this gap, the present study aimed to adapt and rigorously validate the short version of the Attitudes Toward Intellectual Disability scale (ATTID-SF; Morin et al., 2013a, 2019) for use in Spain. METHOD. The study involved 255 university students enrolled in teacher education programs. The Spanish version of the Attitudes Toward Intellectual Disability-Short Form Scale (ATTID-SF-S) was administered, and its psychometric properties were thoroughly examined. Confirmatory factor analysis (CFA) was conducted to test the five-factor structure proposed in the original short form. RESULTS. The confirmatory factor analysis (CFA) supported the original factor model, confirming the multidimensional structure of the instrument. Internal consistency was “acceptable” to “very good” across all five subscales, with ordinal alpha coefficients ranging from 0.77 to 0.91, indicating solid reliability. DISCUSSION. The ATTID-SF-S demonstrated adequate psychometric properties, making it a suitableand practical tool for assessing explicit attitudes toward individuals with intellectual disabilities in Spanish-speaking university populations. Its brevity, theoretical grounding, and structural robustness make it especially appropriate for research, educational, and applied contexts.