Yvonne has been a highly successful academic and clinician with a strong track record in teaching, training, publishing and presenting for the last 20 years. She has published over 150 scientific articles and book chapters and given over 500 presentations and workshops internationally. She was an Associate Professor in Behaviour Analysis and a Senior Research Fellow at Ghent University before establishing Perspectives Ireland. She is a world leader in behavioural science and has co-developed the Process-based Behaviour Therapy technique (PBBT).