This paper models the Self-Sufficiency Project (SSP), a controlled randomized experiment concerning welfare. The model of household behavior includes stochastic labor market skill, job opportunities, and value of non-labor market time. All the variation within and between treatment groups,...

Rust (1987) concludes that the data "clearly reject" the hypothesis that Harold Zurcher made bus replacement decisions using a monthly (and myopic) discount rate of 0 in favor of the factor 0.9999. The alternative model requires the nested fixed point algorithm developed in the paper which...

This paper discusses how to design, solve and estimate dynamic programming models using the open source package niqlow. Reasons are given for why such a package has not appeared earlier and why the object-oriented approach followed by niqlow seems essential. An example is followed that starts...