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Dynamic Aspects of Earning Mobility

Econometrica 1978 46(5), 985
Abs tract This paper proposes an econometric methodology to deal with life cycle earnings and mobility among discrete earnings classes. First, we use panel data on male log earnings to estimate an earnings function with permanent and serially correlated transitory components due to both measured and unmeasured variables. Assuming that the error components are normally distributed, we develop statements for the probability that an individual's earnings will fall into a particular but arbitrary time sequence of poverty states. Using these statements, we illustrate the implications of our earnings model for poverty dynamics and compare our approach to Markov chain models of income mobility. *Thls draft supersedes an earlier version of this paper which was

A Class of Parametric Tests for Heteroscedasticity in Linear Econometric Models

Econometrica 1978 46(6), 1311
A class of parametric for heteroscedasticity in linear models is discussed. For models with nonstochastic regressors, new exact within this class are suggested which utilize existing tables of the distribution of the von Neumann ratio and of the Durbin-Watson bounding ratios. Bound tests for heteroscedasticity in least squares regression are proposed. A rigorous treatment of within this class for heteroscedasticity in the errors of structural relations in dynamic simultaneous equations models is provided.

On a Planning Process Due to Taylor

Econometrica 1978 46(4), 761
[This paper describes a decentralized planning process which is a formalization of an iterative method proposed by Taylor [12] for the construction of an optimal plan in a socialist state. Further, it shows that this process is computationally and informationally more efficient than an alternative process proposed by Malinvaud [10] also as a formalization of Taylor's method.]

Economic Equilibrium and Catastrophe Theory: An Introduction

Econometrica 1978 46(3), 557
[This paper surveys some recent developments in equilibrium analysis based on a differential viewpoint. They deal with the structure of the set of equilibria, with the study of regular and singular economies, with the determinateness of the number of equilibria, and with an application to characterizing economies having a unique equilibrium. Equilibrium analysis from the differential viewpoint turns out to be formally similar to models encountered in Thom's catastrophe theory understood as a general theory of bifurcation phenomena.]