A revised and updated edition (with more than 70% new material) of the evergreen classic about the innate differences between boys and girls and how best to parent and teach girls and boys successfully, with completely new chapters on sexual orientation and on transgender and intersex kids.

Differences -- Smelling, seeing, and hearing -- Risk -- Aggression -- School -- Sex -- Drugs and alcohol -- Social media and video games -- Gender nonconforming -- Lesbian, gay, bisexual -- Intersex and transgender -- The male/female mistake.