In psychology, the term<unk>  is a type of attachment behavior one individual has for another individual, typically a mother for her child, in which the two partners tend to remain in proximity to one another.  The term was coined and subsequently developed over the course of four decades, from the early 1940s to the late 1970s, by psychologist John Bowlby in his work on attachment theory.  The core of the term<unk> ’, according to Bowlby, is the attraction one individual has for another individual.  The central features of the concept of<unk> ing can be traced to Bowlby’s 1958 paper: “the Nature of the Child’s Tie to his Mother.”
Affectional bond
Exaptation
Belief propagation
Attachment 
Dissociation 
Affect display
Lateral thinking
Impaction