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Some scholars define "empty nest" as the family of middle-aged or elderly couple when their children have grown up and left home to live independently. The difference of these two definitions is that whether Ding Ke family is added into the "empty nest" or not.
2 Classification of empty nester
"Empty nest" family can be divided into pure "empty nest" family "and allied "empty nest" family (pure "empty nest" family refers to whose children and relatives that leave them alone. Allied "empty nest" family refers to those elderly people whose children are not at their sides, but other relatives take care of them; that is the classification Mu Guangzong in his book called "Supporting problems in the process of ‘empty nest’ family"). There is also a classification divide "empty nest" family into source "empty nest" family and secondary "empty nest" family, the source "empty nest" family refers to the childless old people (including single elderly and married elderly people); secondary "empty nest" family refers to whose children that are not at their sides or the children live at the same place with them but not eat and live under the same roof with them.This is the study done by Wang Wulin and An Heping in their "An analysis of characteristics and status of life quality of empty nester" .
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