一些证据表明，突发深度衰退会造成暂时性的生育率下降，随后发生反弹，但跨国比较并未表明中期经济成功与该区间内的具体生育率之间存在相关性 — — 不管是正还是负。
And while there is some evidence that sudden deep recessions produce temporary fertility dips, followed by rebounds, cross-country comparison provides no evidence of any correlation – positive or negative – between medium-term economic success and precise fertility rates within this range.