Ruth Baer is a clinical psychologist and Professor of Psychology at the University of Kentucky, where she conducts research on mindfulness and teaches and supervises a variety of mindfulness-based interventions. Her scholarly work focuses on assessment and conceptualization of mindfulness, effects of mindfulness-based interventions, mechanisms of change in mindfulness training, and professional training and ethics in the mindfulness field. She has contributed to the development of several self-report instruments for assessing mindfulness and related skills, edited three books for professionals on mindfulness-related topics, and written a book on mindfulness for the general public. She serves on the editorial boards of several peer-reviewed journals and is an Associate Editor for Mindfulness. She is also an Associate of the Oxford Mindfulness Centre at the University of Oxford where she collaborates on research and gives talks and workshops about mindfulness.