| http://www.w3.org/ns/prov#value | - In particular, as Mark Aguiar and Erik Hurst demonstrate, time spent on such activities as cooking and laundry decreased steadily, while time spent on childcare increased. 4 Garey Ramey and I document and assess possible explanations for the dramatic rise in childcare time in the United States beginning in the 1990s. 5 We find that the largest increases in childcare time were among college-educate
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