Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
The paper analyzes factors influencing the age of motherhood in Japan, using both cross-sectional and time-series data. Both hazard rate and time series analyses support the hypothesis that better women's earning opportunities, as indicated by their educational attainments and relative pay, encourage Japanese women to marry and become mothers later in their lives. But both these analyses indicate that the trend toward later marriage and motherhood in Japan cannot be fully accounted for by improvements in women's educational attainments and earning opportunities, and the hazard analysis indicates that the strength of the trend increases with a woman's educational attainment.