Attachment Styles: adult relationships built on a baby blueprint

I've obviously simplified the actual study! It's been replicated many times over but if you want to read the original: Attachment, exploration, and separation: Illustrated by the behavior of one-year-olds in a strange situation by M.D.S. Ainsworth and S. M. Bell (1970) or the book that came after: Patterns of attachment: a psychological study of the strange situation by M.D.S. Ainsworth, M.C. Blehar, E. Waters, and S. Wall (1978)