Attachment Theory
Attachment theory focuses on relationships and bonds (particularly long-term) between people, including those between a parent and child and between romantic partners. It is a psychological explanation for the emotional bonds and relationships between people.
The theory suggests that people are born with a need to forge bonds with caregivers as children. These early bonds may continue to have an influence on attachments throughout life.
Although attachment styles displayed in adulthood are not necessarily the same as those seen in infancy, early attachments can have a serious impact on later relationships. Adults who were securely attached in childhood tend to have good self-esteem, strong romantic relationships, and the ability to self-disclose to others.