This paper proposes nonparametric tests of additive constraints on the first and second derivatives of a model E(y/x) = g(x), where the true function g is unknown. Such constraints are illustrated by the economic restrictions of homogeneity and symmetry, and the functional form restrictions of...

This paper gives a solution to the problem of estimating coefficients of index models, through the estimation of the density-weighted average derivative of a general regression function. A normalized version of the density-weighted average derivative can be estimated by certain linear...

This paper presents estimates of the distributional welfare impacts ofthe actual price rises of energy and nonenergy commodities during the1970-80 decade in the United States. Measures of welfare changes basedon net compensating variations are computed for families that differ with respect to...