We present comprehensive evidence in support of giving liquidity equal standing to size, value/growth, and momentum as investment styles, as defined by Sharpe (1992). First, we show that financial market liquidity, as identified by stock turnover, is an economically significant indicator of...

This paper studies the identification of the coefficients in a linear equation when data on the outcome, covariates, and an error-laden proxy for a latent variable are available. We maintain that the measurement error in the proxy is classical and relax the assumption that the proxy is excluded...

Limited by the lack of data on gun ownership in the United States, ecological research linking firearms ownership rates to homicide often relies on proxy measures of ownership. Although the variable of interest is the gun ownership rate, not the proxy, the existing research does not formally...

We characterize the sharp identification regions for the coefficients in a system of linear equations that share an explanatory variable measured with classical error. We demonstrate the identification gain from analyzing the equations jointly. We derive the sharp identification regions under...

Debtor rights vis-a-vis creditor during bankruptcy can evolve over time due to changes in the nature of the prevailing bankruptcy law and its practice. I empirically study such a time-series trend in debtor rights using comprehensive sample of U.S. firms. To this end, I develop a dynamic model...

Almost by definition, radical innovations create a need to revise existing classification systems. As a result, the evolution of technological classification systems reflects technological evolution. We present three sets of findings regarding classification volatility in the U.S. Patent...

The alarming rise in drinking water pollution across the U.S. is often attributed to cost cutting pressures faced by local officials. We know little, however, about why these pressures are so severe for some cities compared to others. We present a new theory to argue that an important...