In this paper, we study a voluntary contribution mechanism withone-way communication. The relevance of one person’s words is assessedby assigning exogeniously the role of the ‘communicator’ to onegroup member. Contrary to the view that the mutual exchange ofpromises is necessary for the...

This paper outlines why program evaluation should follow well-respected scientific standards and why it should be performed by independent researchers.

Die vorliegende Arbeit analysiert Vor- und Nachteile des Einsatz objektorientierter Konzepte bei der Entwicklung von EDV-unterstützten Informationssystemen.

We describe a simulation-based algorithm for Bayesian estimation of structuraleffects in models where the outcome of interest and an endogenous treatment variableare ordered. Our algorithm makes use of a reparameterization, suggested by Nandramand Chen (1996) and Li and Tobias (2005) in the...

This paper examines the impact of public and private agricultural research andextension on agricultural total factor productivity at the state level. We test the hypothesis thatthe composition of agricultural experiment station funding—share of funding from impact offederal competitive grants...

This paper presents new econometric evidence on state government’s demand for resources to support local agricultural experiment station research. The econometric model consists of a complete-demand system covering four major resource sources, and it is fitted to annual observations on 48...

Genetically modified (GM) foods have caused many controversies. One important controversy relates to tolerance?the impurity rate that is tolerated before a commodity must be labeled as genetically modified. Currently, the United States does not have a specific tolerance or threshold level for GM...

Public debate continues over whether the United States should regulate genetically modified (GM) foods by imposing a mandatory labeling policy. This paper develops a model that shows that a voluntary GM-labeling policy results in higher welfare than a regulated mandatory GM-labeling policy, if...

This paper analyzes data from a novel field experiment designed to test the impact of twodifferent insurance products and a secret saving device on solidarity in risk-sharing groupsamong rural villagers in the Philippines. Risk is simulated by a lottery. Risk-sharing ispossible in solidarity...

In this paper, we use unique data from a field experiment in the Swedish labor market toinvestigate how past and contemporary unemployment affect a young worker’s probability ofbeing invited to a job interview. In contrast to studies using registry/survey data, we havecomplete control over the...