Below is a list of the prizewinners during the period 1996 - 2000 with a description of the works which won them their prizes:(1996) J A MIRRLEES & W S VICKREY ¿ for their fundamental contributions to the economic theory of incentives under asymmetric information; (1997) R C MERTON & M A SCHOLES ¿ for a new method to determine the value of derivatives; (1998) A K SEN ¿ for his contributions to welfare economics; (1999) R A MUNDELL ¿ for his analysis of monetary and fiscal policy under different exchange rate regimes and his analysis of optimum currency areas; (2000) J J HECKMAN ¿ for his development of theory and methods for analyzing selective samples & D L McFADDEN ¿ for his development of theory and methods for analyzing discrete choice.