“…Due to their economic affluence, the three countries now attract immigrants seeking new economic opportunities. Their ethnic and demographic composition is changing because of the combined effects of low fertility rates, high sex ratios (or sex imbalance) at birth, and the rapid aging of the population (H. Kim, 2009;Kim and Oh, 2011;Park and Cho, 1995;Rei, 2007;Yô et al, 2007;). These current phenomena, or shôshi kôreika (i.e., low fertility and population aging), first started in Japan in the 1980s and emerged in Korea and Taiwan in the 1990s.…”