Under recent conditions of economic competition, customer/worker interactions increasingly are a source of profitability in service firms. Companies may employ refined methods for making these interactions a source of information about workers' performance. This paper investigates how managers...

This article examines the effects of refusers and reluctant respondents to a general population survey on estimates of population distributions and multivariate relationships. Our data indicate that refusers do not constitute a simple random sample of respondents, and that efforts to correct for...

Mathematica provides powerful tools for solving differential equations. The functions LogicalExpand and Series can be used to decompose a PDE into a system of ODEs which can then be solved numerically with DSolve, providing fast and accurate solutions. These tools are illustrated by solving the...

Correlations of inflation with the growth rate of money increase when data are averaged over longer time periods. Correlations of inflation with the growth of money also are higher when high inflation as well as low-inflation countries are included in the analysis. We show that serial...

This paper presents tractable and efficient numerical solutions to general equilibrium models of asset prices and consumption when the representative agent has recursive preferences. It provides a discrete-time presentation of the approach of Fisher and Gilles (1998), treating continuous-time...