Mark is a Bachelor of Speech therapy and Audiology (Thomas More U College) and M Sc in Clinical Language, Speech and Hearing Sciences (Utrecht University). He lectures in fluency disorders, articulation disorders, methodology of speech therapy and behaviour analysis, and was a co-coordinator of the Postgraduate Course in Fluency Disorders at Thomas More U College. He specialised in Fluency and Voice disorders and has extensive clinical experience in fluency disorders. He is a former guest lecturer in Postgraduate Program on Fluency Disorders at Artevelde College Ghent, and in the Specialisation Course on Stuttering Therapy. He published various articles and gave lectures on the treatment of fluency disorders.