A comprehensive and fully updated guide to the biological mysteries behind teenage behavior. Contrary to popular (parental) belief, teenagers are not the deliberately lazy, risk-taking, and work-avoiding individuals they appear to be to the adults around them. During adolescence, the brain undergoes the most radical and fundamental changes since the age of two. Nicola Morgan's carefully researched, accessible, and empathetic examination of the winds and storms of the teenage brain includes chapters dealing with strong emotions, gender differences, the need for more sleep, the desire for risk-taking, and the reasons behind addiction or depression. This fully updated edition of this classic bestseller contains significant new research and an all-new chapter on social media, making it an essential guide for teenagers and adults.