This paper provides new evidence on time devoted to job search by the employed in the U.S. I find that search effort decreases with the current wage, with an elasticity between -0.7 and -1.3.

Two-stage-least-squares (2SLS) estimates are biased towards OLS estimates. This bias grows with the degree of over-identification and can generate highly misleading results. In this paper we propose two simple alternatives to 2SLS and limited-information-maximum-likelihood (LIML) estimators for...

Instrumental Variables (IV) estimates tend to be biased in the same direction as Ordinary Least Squares (OLS) in finite samples if the instruments are weak. To address this problem we propose a new IV estimator which we call Split Sample Instrumental Variables (SSIV). SSIV works as follows: we...

This paper compares the characteristics of 63 alleged homegrown Islamic terrorists in the U.S.A. to a representative sample of 1000+ Muslim Americans. The alleged terrorists have about average level of education. Those with higher education were judged closer to succeeding.