For more than we are consciously aware, our daily encounters with parents, spouses, bosses and even strangers shape our brains and affect cells throughout our bodies - down to the level of our genes - for good or ill. In Social Intelligence, Daniel Goleman explores an emerging new science with startling implications for our interpersonal world. Its most fundamental discovery: we are designed for sociability, constantly engaged in a "neural ballet" that connects us brain to brain with those around us.

Our reactions to others, and theirs to us, have a far-reaching biological impact, sending out cascades of hormones that regulate everything from out hearts ot our immune systems, making good relationships act like vitamins - and bad relationships like poisons. We can "catch" other people's emotions the way we catch a cold, and the consequences of isolation or relentless social stress can be life-shortening.

Goleman explains the surprising accuracy of first impressions, the basis of charisma and emotional power, the complexity of sexual attraction, and how we detect lies. He describes the "dark side" of social intelligence, from narcissism to Machiavellianism and psychopathy. He also reveals our astonishing capacity for "mindsight," as well as the tragedy of those, like autistic children, whose mindsight is impaired.