Laurens Cherchye Katholieke Universiteit Leuven   ,   Laurens.Cherchye@kuleuven.be     Biographical Sketch: Revealed preference theory and nonparametric analysis of consumption behavior The collective model of household consumption behavior Nonparametric production and efficiency analysis       JEL Areas: I3 : Welfare and Poverty: General C3 : Multiple or Simultaneous Equation Models: General