Baby illusion.
Many mothers fantasize their youngest child is smaller than he or she indeed is, according to new research. The finding may help explain why many of these children are referred to as the "baby of the family," well into adulthood. It also offers a purpose why a first child suddenly seems much larger when a unusual sibling is born who is phil. Until the arrival of the new child, parents experience what is called a "baby illusion," said the authors of the study, which was published Dec 16, 2013 in the gazette Current Biology.