Attachment theory originated by John Bowlby and attachment styles were later researched in the Mary Ainsworth strange situation study that looked at babies, 12-24 months old and how they reacted when primary caregivers and strangers exited and re-entered the room. This revealed the way the child had bonded to their caregivers which then served as a working model for the child's relationships throughout adulthood. Attachment styles exist on a spectrum and individuals can hav