Despite rapid inflation in childcare and tuition prices, the goods-and-services CCI closely tracks adult prices, as these increases are
offset by children’s lower exposure to shelter and by slower price growth elsewhere in the child basket. Households devote substantially more real resources to children than they did in 1990, but this increase parallels the growth of real adult consumption rather than reflecting a child-specific rise in prices. A similar offsetting pattern appears for parental time: the rising value of women’s time is largely counterbalanced by declining motherhood penalties in earnings and work hours, so forgone market work adds little to relative cost growth. The main departure from this stability comes from the growing amount of leisure displaced by childcare; valuing that time raises the CCI, although the magnitude depends on the shadow value assigned to leisure.

A surprising and important result, from a new paper by Christina Patterson and Heather Sarsons.