Wu cites the example of the US, where the divorce rate is high, but so is the remarriage rate. Wu says that stepfamilies in which "the wife's children and the husband's children are looking after the children of the new couple," are widespread. Consequently, children spend a very short period of their life in a "single-parent family."
他以美國為例指出，美國離婚率雖然高，但是相對地再婚率也高，「你的孩子和我的孩子在照顧我們的孩子」式的繼親家庭普遍，因此，孩子一生中處於「單親家庭」的時間反而非常短。