Dr Lambert is a Lecturer in Health and Exercise Psychology and Chartered Psychologist based at the Department for Health at the University of Bath.  Jeff’s broad research interests include physical activity, mental health and behaviour change. More specifically Jeff is interested in: a) understanding the biopsychosocial factors linking physical activity and mental health; b) designing and evaluating behavioural interventions to increase physical activity and improve mental health; and c) assessing intervention fidelity (the extent to which behavioural interventions are delivered as intended).