We estimate the effect of new private-sector unionization on publicly traded firms' equity value in the United States over the 1961--1999 period using a newly assembled sample of National Labor Relations Board (NLRB) representation elections matched to stock market data. Event-study estimates...

Schelling ("Dynamic Models of Segregation," Journal of Mathematical Sociology 1 (1971), 143-186) showed that extreme segregation can arise from social interactions in white preferences: once the minority share in a neighborhood exceeds a "tipping point," all the whites leave. We use regression...

We develop a model of optimal schooling investments and estimate it using new data on approximately 700 identical twins. We estimate an average return to schooling of 9 percent for identical twins, but estimated returns appear to be slightly higher for less able individuals. Simple cross-section...