Marie is an Irish Times Health Columnist. She is a well-known contributor to radio and television and may be known best for her weekly psychology series on RTE Radio One's Drivetime with Mary Wilson and for the years she provided a weekly psychology slot on the Today with Pat Kenny radio programme. She is a prolific writer, lecturer and commentator and has published widely in the areas of mental health, education and psychology. She is a registered psychologist, registered family therapist and supervisor, and a registered member of the European Association for Psychotherapy. Her previous roles included Director of the Student Counselling Services in University College Dublin, and Director of Psychology at St Vincent’s Psychiatric Hospital, Dublin.