The book talks about how nature and heredity influence a child’s character and behavior, how his personality and behavior change with age, differences in development and behavior due to the child’s gender, the role and significance of various factors regulating the behavior of a teenager. You will find here answers to many questions, receive information that will allow you to explain previously incomprehensible cases from your own practice, and most importantly, learn to better understand your children. The book is intended for a wide range of readers.