In this Paper, we empirically test for network effects and preannouncement effects in the DVD market. We do this by measuring the effect of potential (incompatible) competition on a network undergoing growth. We find that there are network effects. The data is generally consistent with the...

Two important welfare implications of network effects are that (1) market forces often result in suboptimal standardization, that is, left alone the market may fail to achieve standardization when it is socially desirable and (2) even if the market settles on a standard, the chosen standard may...

In April 1997, a consortium of hardware manufacturers and movie studios launched the DVD format. By that fall, electronics retailing giant Circuit City announced its intentions to launch a partially incompatible format known as DIVX. This Paper assesses Circuit City’s strategy to establish the...

The U.S. healthcare system is in critical condition--but this should come as a surprise to no one. Yet until now the solutions proposed have been unworkable, pie-in-the-sky plans that have had little chance of becoming law and even less of succeeding. In Code Red, David Dranove, one of the...

Through utilization review (UR), managed care organizations (MCOs) monitor and alter physician treatment decisions. We show that the value of UR depends on physician incentives. Not surprisingly, when physicians have incentives to significantly overtreat patients, UR can improve social welfare...