Attachment Theory:A psychological model attempting to describe the dynamics of long-term interpersonal relationships between humans.
Secure Attachment:A type of attachment characterized by feelings of security in relationships. Individuals with secure attachments feel comfortable with intimacy and are usually warm and loving.
Reactive Attachment Disorder (RAD): A rare but serious condition where an infant or young child doesn't establish healthy attachments with parents or caregivers due to early neglect or mistreatment.