England and research partner Elizabeth McClintock of Stanford partially explain their findings as due to major alterations of the family structure following the tumult of the 1960s.

• 英格兰和研究伙伴，黄钱其濂麦克林托克斯坦福部分解释他们的调查结果，由于主要的改变家庭结构之后，动荡的六十年代。