All of us like to think we understand other people to some extent, at least, from every day observation and the business of living. But what more can we learn about our fellow humans from the work of professional psychologists who have conducted massive experiments on groups and individuals to determine scientifically why we behave the way we do? In what circumstances will we go to someone's help? Are we all capable of great cruelty? Does fear always engender total obedience? These and many other fascinating questions about the human personality are examined in this book.