He has written three books and numerous book chapters on adult ADHD, and has spoken on the topic across the U.S. and in seven countries. His work with adults with ADHD led to an interest in how ADHD impacts relationships, including a couple's sex life, which then led to post-graduate sex therapy training. He firmly believes that working on the honesty, discovery, and respectful communication involved in creating a better sex life will not only improve a relationship, but also make an individual a better person. He is currently working on his fourth book, to help couples in which one partner has ADHD create a better sex life and relationship, based on his extensive survey research.