The Watts Connectedness Scale: A new scale for measuring a sense of connectedness to self, others, and world

Development and validation of the Watts Connectedness Scale (WCS), measuring felt connectedness to self, others, and the wider world. Factor analysis of data from 1,278 participants confirmed a three-factor structure with strong internal consistency. Improvements in WCS scores correlated with improved mental health outcomes in psychedelic therapy trials. Defines connectedness as a transdiagnostic construct relevant to psychedelic-assisted treatment across conditions including depression, anxiety, and addiction.