Summary: The Attachment Theory

Many researchers have studied attachment; however, John Bowlby and Mary Ainsworth are the researchers responsible for the origination of the attachment theory, therefore also becoming catalysts for the research of attachment in the late eighteenth century. Attachment, as defined by Ainsworth, is “‘an affectional tie’ that an infant forms with a caregiver—a tie that binds them together in space and endures over time” (Berger, 2014, p. 142). Furthermore, as described in Berger, the attachment theory assesses the behaviors associated with four identified types of infant attachment. These four types include secure, insecure-resistant/ambivalent, insecure avoidant, and disorganized attachment. Berger defines each of these types as follows: securely