نظرية التعلق
Today, the concept of dependency need is largely interrelated with the concept of attachment theory. Nowadays, a lot of attachment theory studies are interested in seeing if there is a relationship between a person's style of attachment (developed in infancy) and the way in which he or she deals with whatever life throws his or her way (years later); i.e., dealing with emotions after a break-up or making friendships in college. Conclusions can be visibly drawn linking attachment and dependency need; vital, infantile needs for mothering, love, affection, shelter, protection, security, food, and warmth (dependency need) can stem from the type of interaction between that of an infant and his or her primary caregiver. Attachment theory can also go beyond infancy to look at how early interactions have shaped an individual's personality, and how he or she deals with life situations years and years down the road. Dependency need continues to be a concept that is of great interest to psychologists (more specifically tied into attachment theory) and is ever-present in the everyday lives of all human beings.