The staggered introduction of Corporate Opportunity Waivers (COWs) in nine US states since 2000 reduced legal risk to directors serving on multiple boards and increased intra-industry board overlap in firms characterized by intensive R&D activity. More board overlap results in a higher return on...

Ninety-two percent of the 1,348 North American executives we survey believe that improving culture would increase firm value. A striking 84% believe they need to improve their culture. But how can that be achieved? Our paper provides some guidance. First, we directly link culture to financial...

Using a unique 10-year panel that includes more than 13,300 expected stock market return probability distributions, we find that executives are severely miscalibrated, producing distributions that are too narrow: realized market returns are within the executives' 80% confidence intervals only...

Using a unique 10-year panel that includes more than 13,300 expected stock market return probability distributions, we find that executives are severely miscalibrated, producing distributions that are too narrow: realized market returns are within the executives' 80% confidence intervals only...

"Miscalibration is a form of overconfidence examined in both psychology and economics. Although it is often analyzed in lab experiments, there is scant evidence about the effects of miscalibration in practice. We test whether top corporate executives are miscalibrated, and study the determinants...