He uses various biofeedback modalities plus imagery and hypnosis to teach self-regulation to pain patients. He earned his PhD from Michigan State University and was in private practice in New Jersey. He served a term on the AAPB board of directors and co-wrote the 2002 version of Evidence-based Practice in Biofeedback and Neurofeedback. He has written about hyperventilation, headaches, and breathing disorders, and uses capnometry biofeedback often in his work with pain and anxiety. He is an associate editor of Biofeedback and is on the advisory board of the Journal of Bodywork & Movement Therapies. He co-wrote and edited the recent book Recognizing and Treating Breathing Disorders and the earlier Multidisciplinary Approaches to Breathing Pattern Disorders.