This paper presents the first national estimates of the effects of the SCHIP expansions on insurance coverage. Using CPS data on insurance coverage during the years 1996 through 2000, we estimate two-stage least squares regressions of insurance coverage. We find that SCHIP had a small, but...

The influence of shopper's perception of the physical environmental factors on impulse buying at the retail level has attracted the attention of researchers since the last three decades but the role of perceived crowding and in-store browsing attracted little attention. This paper attempts to...

Is public R&D spending complementary and thus "additional" to private R&D spending, or does it substitute for and tend to "crowd out" private R&D? Conflicting answers are given to this question. We survey the body of available economectric evidence accumulated over the past 35 years. A framework...

In our model, an agent produces an outcome by a costly effort and then distributes it among heterogeneous users. The agent's payoff is the weighted sum of the users' shares and the coefficient reflecting their heterogeneity. When the agent neglects users' heterogeneity the game leads to an...