Editing Attachment theory (section)

====Cognitive development====
Bowlby's reliance on [[Jean Piaget|Piaget]]'s theory of cognitive development gave rise to questions about object permanence (the ability to remember an object that is temporarily absent) in early attachment behaviours. An infant's ability to discriminate strangers and react to the mother's absence seemed to occur months earlier than Piaget suggested would be cognitively possible.<ref name="fraiberg">{{cite journal | vauthors = Fraiberg S | title = Libidinal object constancy and mental representation | journal = The Psychoanalytic Study of the Child | volume = 24 | pages = 9–47 | year = 1969 | pmid = 5353377 | doi = 10.1080/00797308.1969.11822685 }}</ref> More recently, it has been noted that the understanding of mental representation has advanced so much since Bowlby's day that present views can be more specific than those of Bowlby's time.<ref name="waters2">{{cite journal | vauthors = Waters HS, Waters E | title = The attachment working models concept: among other things, we build script-like representations of secure base experiences | journal = Attachment & Human Development | volume = 8 | issue = 3 | pages = 185–97 | date = September 2006 | pmid = 16938702 | doi = 10.1080/14616730600856016 | s2cid = 11443750 }}</ref>