Why Do They Act That Way? was the first book to explain the scientific, brain-based reasons behind teens' impulsive behavior, lack of focus, self-consciousness, territoriality, fatigue, and their quickness to anger and take risks--to name just a few common teen problems.

Now, award-winning psychologist Dr. David Walsh has updated this classic with the latest research into the adolescent brain and the new challenges that they face with social media and the 24/7 online world. With practical advice and reassuring guidance, Walsh provides realistic solutions for dealing with every day and major challenges. As a parent, psychologist, coach, and trusted expert, Dr. Walsh offers the best advice to help adolescents thrive and parents survive.