Jon Kabat-Zinn who teaches Mindfulness-Based Stress Reduction (MBSR) & Zindel V. Segal who teaches Mindfulness-based cognitive therapy Jon Kabat-Zinn & Zindel V. Segal teach meditation based on scientific findings. & Jack Kornfield holds a Ph.D.in clinical psychology and is a founding teacher of the Insight Meditation Society in Massachusetts. And he teaches meditation at the …