Southampton Mindfulness Questionnaire: Confirmatory Factor Analysis and Psychometric Properties Across Portuguese Clinical and Non-clinical Samples

Southampton Mindfulness Questionnaire (SMQ) is one of the available instruments to assess mindfulness and has been described as particularly suited for clinical populations. The original study SMQ conceptualized it having four facets, but yielded a single factor structure. aim this was confirm structure examine its psychometric properties in non-clinical Portuguese samples. community sample comprised 243 participants, ranging from 18 77 years. Additionally, sensitivity, two distinct samples were used: individuals with meditation experience (n = 30) (43 psychosis). Factor structure, reliability, validity, sensitivity analyses performed. Confirmatory seem support overarching construct containing revealing an acceptable fit through parceling method. Significant correlations obtained between another measure, also measures cognitive fusion, positive negative affect. Results indicated significant differences non-judging facet meditators non-meditators results indicate that although shown adequate reliability some limitations measure have found. Further studies are needed, samples, determine how current version could be improved whether should revised.