( 1997 ) theory: first, the current definition of hypersensitivity pertains only to emotional, rather than physical or environmental, stimulation. On the one hand, we have not yet been able to empirically verify ourselves whether emotional hypersensitivity and sensory hypersensitivity respond to the same underlying mechanisms. On the other hand, we also think that a hypersensitive person’s senses are not more developed than a nonhypersensitive person; it is, rather, their brain that perceives and processes more in-depth information, especially of an emotional nature. This may lead to a hyperactivity of the nervous system that can activate the person experiencing it. In the end, we think that hypersensitivity might depend on the amplification of emotional processing associated with sensory perception rather than on a more developed sensory perception. Second, sensory processing sensitivity is typically measured with self-report scales, whereas emotional (hyper)sensitivity associated with EI is measured through objective, performance-based tasks. Self-report hypersensitivity questionnaires typically ask people to position themselves on items describing typical hypersensitive indicators, such as “I am very sensitive to pain”. This way of measuring/estimating hypersensitivity is based very much on self-knowledge and the recognition of how one usually behaves. The framework of hypersensitivity as it is presented in this contribution, and in the empirical work we have been performing so far on hypersensitivity and EI (e.g., Gillioz et al. 2023a , 2023b ; Nicolet-dit-Félix et al. 2023 ), relies more directly on how individuals react to emotions and emotional stimuli. For example, we present emotional facial expressions and test whether hypersensitive individuals pay more attention to them as compared to neutral facial expressions, or we employ very subtle and complex blends of expressions that only hypersensitive people can recognize. This way of measuring hypersensitivity