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α: calibrated so average coauthorship-adjusted count equals average raw count
Using variation in crop prices induced by large swings in demand surrounding World War I, we examine the fertility response to crop revenue increases from 1910 to 1930. Our estimates indicate that agricultural price increases reduced fertility, explaining about 9% of the overall decline in fertility over the period. The effect persists years after the collapse of the war boom. Importantly, we show that fertility declines were concentrated in farm women and fertility declined along intensive and extensive margins. Combined, the pattern of estimates is consistent with agricultural women experiencing an increase in the opportunity cost of their time.