The secure attachment style in adults corresponds to the secure attachment style in children. The anxious–preoccupied attachment style in adults corresponds to the anxious-ambivalent attachment style in children. However, the dismissive-avoidant attachment style and the fearful-avoidant attachment style, which are distinct in adults, correspond to a single avoidant attachment style in children. The descriptions of adult attachment styles offered below are based on the relationship questionnaire devised by Bartholomew and Horowitz and on a review of studies by Pietromonaco and Barrett.