An enthralling, pioneering and now classic account of the processes that take place in human attachment and separation. In this classic work of psychology John Bowlby examines the processes that take place in attachment and separation and shows how experimental studies of children provide us with a recognizable behaviour pattern which is confirmed by discoveries in the biological sciences. He makes clear that human attachment is an instinctive response to the need for protection against predators, and one as important for survival as nutrition and reproduction.