Ragnar Frisch Centre for Economic Research, Oslo, Norway.
Biol Lett. 2023 Jun;19(6):20230172. doi: 10.1098/rsbl.2023.0172. Epub 2023 Jun 28.
The relationship between cognitive ability (CA) and childbearing remains unsettled. Using Norwegian administrative registers with population coverage, we study how male lifetime fertility patterns differ across cognitive score groups, and how these changed across the 1950-1981 birth cohorts, covering a period characterized by rapid social and economic change. The analyses reveal systematic differences in fertility and fertility timing across CA groups, with high scoring males having delayed but ultimately higher fertility than lower scoring males. This pattern remains stable over time despite strong trends towards delayed and reduced fertility. The overall positive relationship between CA and fertility is primarily driven by high rates of childlessness in the lowest scoring group, with low-scoring males showing higher rates of parity progression at higher parities.
认知能力（CA）与生育能力之间的关系仍未得到解决。我们利用具有人口覆盖范围的挪威行政登记处，研究了男性终生生育模式如何因认知得分组而不同，以及这些模式如何在 1950-1981 年出生队列中发生变化，这一时期的特点是社会和经济迅速变化。分析显示，在 CA 组之间，生育和生育时间存在系统差异，高得分男性的生育延迟但最终高于低得分男性。尽管存在生育延迟和减少的强烈趋势，但这种模式随着时间的推移保持稳定。CA 与生育能力之间的总体正相关关系主要是由得分最低组的高不育率驱动的，低得分男性在较高的胎次上表现出更高的生育进度率。
