Toronto Mindfulness Scale (TMS)

The Toronto Mindfulness Scale (TMS) is a 13-item self-report instrument uniquely designed to measure state mindfulness—the immediate, transient quality of mindful awareness during or immediately following a meditation session. Developed by Zindel V. Segal, Mark A. Lau, and colleagues at the University of Toronto and published in the Journal of Clinical Psychology in 2006, the TMS captures two core dimensions of state mindfulness: Curiosity and Decentering. Unlike trait measures (FFMQ, FMI) which assess habitual mindfulness, the TMS provides moment-to-moment assessment and has become essential in mindfulness-based cognitive therapy (MBCT) and contemplative neuroscience research.