Risk preferences play a fundamental role in individuals' economic decision-making. We examine whether the historical macroeconomic environment shapes individuals' willingness to take risks. Using nationally representative samples from Japan and exploiting regional variation in economic...

Using birth records in Japan, where school entry rule is strictly enforced, this paper shows that more than 1,800 births a year are shifted from one week before the school entry cutoff date to one week following the cutoff date. Because older children perform better academically than their...

We evaluate the impact of government mandated proof of vaccination requirements for access to public venues and non-essential businesses on COVID-19 vaccine uptake. We find that the announcement of a mandate is associated with a rapid and significant surge in new vaccinations (more than 60\%...

This study exploits over 5,000 variations in subsidy generosity across ages and municipalities in Japan to examine how children respond to healthcare prices. We find that free care significantly increases outpatient spending, with price elasticities considerably smaller than for adults. Price...

We estimate the impact of mask mandates and other non-pharmaceutical interventions (NPI) on COVID-19 case growth in Canada, including regulations on businesses and gatherings, school closures, travel and self-isolation, and long-term care homes. We partially account for behavioral responses...

This study tests whether demand responds symmetrically to price increases and decreases--a seemingly obvious proposition under conventional demand theory that has not been rigorously tested. Exploiting rapid expansion in municipal subsidies for child healthcare in a difference-in-differences...

Federal prohibition from 1920 to 1933 was one of the most ambitious policy interventions in US history. However, due to the political concessions necessary to bring about repeal, the removal of restrictions on alcohol after 1933 was not uniform. Using new data on city-level variation in alcohol...

The poor live paycheck to paycheck and are repeatedly exposed to strong cyclical income fluctuations. We investigate whether such income fluctuations affect risk preference among the poor. If risk preference temporarily changes around payday, optimal decisions made before payday may no longer be...

Classroom peers are believed to influence learning by teaching each other, and the efficacy of this teaching likely depends on classroom composition in terms of peers' ability. Unfortunately, little is known about peer-to-peer teaching because it is never observed in field studies. Furthermore,...

Exploiting new data on county-level variation in alcohol prohibition from 1933 to 1939, we investigate whether the repeal of federal prohibition increased infant mortality, both in counties that repealed and in their neighboring counties. Using a binomial fixed-effects model, we find that repeal...