Colluding firms often exchange private information and make transfers within the cartels based on the information. Estimating the impact of such collusive practices" - known as the 'lysine strategy profile (LSP)" - on cartel duration is difficult because of endogeneity and omitted variable bias....

Using state-level data for the period 1990 through 2007, we estimate the effect of legalizing medical marijuana on suicide rates. Our results suggest that the passage of a medical marijuana law is associated with an almost 5 percent reduction in the total suicide rate, an 11 percent reduction in...