Most evidence on foreclosure spillovers identifies localized effects that are modest in magnitude, but these effects could multiply to larger aggregate effects across broad neighborhoods. We test this proposition developing a proxy for the fraction of mortgages in negative equity during the...

Why do crime rates differ greatly across neighborhoods and schools? Comparing youth who were assigned to opposite sides of newly drawn school boundaries, we show that concentrating disadvantaged youth together in the same schools and neighborhoods increases total crime. We then show that these...