This book examines the trends, underlying factors, and policy implications of fertility declines in three East Asian countries: Japan, South Korea, and China. In contrast to Western countries that have also experienced fertility declines to below-replacement levels, fertility decline in these East Asian countries is most notable in its rapidity and sheer magnitude. After a rapid decline shortly after the war, in which fertility was halved in one decade from 4.5 children per woman in 1947 to 2.1 in 1957, Japan's fertility started to decline to below-replacement levels in the mid-1970s,...