Reactive attachment disorder
The broad theoretical framework for current versions of RAD is attachment theory, based on work conducted from the 1940s to the 1980s by John Bowlby, Mary Ainsworth and René Spitz. Attachment theory is a framework that employs psychological, ethological and evolutionary concepts to explain social behaviors typical of young children. Attachment theory focuses on the tendency of infants or children to "seek proximity" to a "particular attachment figure" (familiar caregiver), in situations of alarm or distress, behavior which appears to have survival value. This is known as a discriminatory or selective attachment. Subsequently, the child begins to use the caregiver as a base of security from which to explore the environment, returning periodically to the familiar person. Attachment is not the same as love and/or affection although they are often associated. Attachment and attachment behaviors tend to develop between the ages of six months and three years. Infants become attached to adults who are sensitive and responsive in social interactions with the infant, and who remain as consistent caregivers for some time. Caregiver responses lead to the development of patterns of attachment, that in turn lead to internal working models which will guide the individual's feelings, thoughts, and expectations in later relationships. For a diagnosis of reactive attachment disorder, the child's history and atypical social behavior must suggest the absence of formation of a discriminatory or selective attachment.
Attachment and Health
In the late 1980s Cindy Hazan and Phillip Shaver applied attachment theory to adult romantic relationships based on observations of the interactions between adult romantic partners.☃☃ They noticed that romantic partners often prefer to be physically close, become anxious when they are separated and that stressful situations can be buffered by the presence of a romantic partner. Three main methods of measuring adult attachment have been developed (see attachment measures), with slightly different purposes and variable amounts of concordance between them. Some aim to categorize attachment style while others rate degrees of attachment anxiety and avoidance.