Nevertheless, the demographer John C Caldwell has suggested that the reason for the rapid decline in fertility in some developing countries compared to Western Europe, the United States, Canada, Australia and New Zealand is mainly due to government programs and a massive investment in education both by governments and parents.
然而，人口统计学家约翰 · c · 考德威尔认为，与西欧、美国、加拿大、澳大利亚和新西兰相比，一些发展中国家生育率迅速下降的主要原因是政府计划和政府及家长对教育的大规模投资。