A better understanding of the relationship between public investments in agricultural R&D and the productivity enhancing benefits they produce is critical to informing the public funding of agricultural R&D and insuring future increases in agricultural productivity. This paper describes a method...

We use newly constructed state-specific data to explore the implications of common modeling choices for measures of research returns. Our results indicate that state-to-state spillover effects are important, that the research and development lag is longer than many studies have allowed, and that...

CONTEXT -- A Brief History of U.S. Agriculture -- INPUTS, OUTPUTS AND PRODUCTIVITY -- Agricultural Inputs -- Agricultural Outputs -- Agricultural Productivity Patterns -- AGRICULTURAL R&D FUNDING AND POLICIES -- Research Funding and Performance -- The Federal Role -- MODELS OF R&D AND...