Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Driving is the single biggest source of household carbon emissions, and land-use policies that encourage higher density are motivated in part by findings of lower vehicle ownership rates in compact areas. However, many previous estimates suffer from self-selection bias. Utilizing an indicator variable for the presence of same gender children in the household as an instrument for population density, I find a 10% increase in density causes a 0.012 decrease in the size of a household’s vehicle fleet, a reduction of about half a percentage point.