The DOES Scale: Measuring Sensory Processing Sensitivity as a Trait Constellation

Based on Aron's (2020) DOES model, we developed the DOES Scale to measure Sensory Processing Sensitivity (SPS) with four dimensions: Depth of Processing, Overstimulation, Emotional Reactivity, and Sensing the Subtle. Using interview data from the study by Roth et al. (2023), we created a 20-item questionnaire (5 items per dimension) in German and English. In three studies with 1,365 subjects from Switzerland, Germany, Austria, and the UK, we evaluated the psychometric properties of the scale using confirmatory factor analysis and examined construct validity with the established Highly Sensitive Person Scale (HSPS) and different personality measures. The results confirmed each subscale's unidimensionality and good psychometric properties. Considering the four subscales together indicated that they could be best described as correlated factors rather than in terms of a second-order factor. Convergent validity was confirmed, especially for Overstimulation in its association with the HSPS total score and its subscales EOE and LST. Regarding discriminant validity, the Sensing the Subtle dimension exhibited clear distinctiveness, while the other three subscales overlapped with neuroticism, extraversion, empathy, and rumination, aligning with theoretical expectations. The DOES Scale emerges as a reliable, valid tool for assessing SPS, recommending its four dimensions be interpreted as a trait constellation.