NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Working Papers by Richard Nelson

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Working Papers

December 2005Improving the Performance of the Education Sector: The Valuable, Challenging, and Limited Role of Random Assignment Evaluations
with Richard J. Murnane: w11846
In an attempt to improve the quality of educational research, the U.S. Department of Education%u2019s Institute of Education Sciences has provided funding for 65 randomized controlled trials of educational interventions. We argue that this research methodology is more effective in providing guidance to extremely troubled schools about how to make some progress than guidance to schools trying to move from making some progress to becoming high performance organizations. We also argue that the conventional view of medical research -- discoveries made in specialized laboratories that are then tested using randomized control trials -- is an inaccurate description of the sources of advances in medical practice. Moreover, this conventional view of the sources of advances in medical practice leads...

Published: Richard J. Murnane & Richard R. Nelson, 2007. "Improving the Performance of the Education Sector: The Valuable, Challenging, and Limited Role of Random Assignment Evaluations," Economics of Innovation and New Technology, Taylor and Francis Journals, vol. 16(5), pages 307-322. citation courtesy of

February 2000Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent (or Not)
with Wesley M. Cohen, John P. Walsh: w7552
Based on a survey questionnaire administered to 1478 R&D labs in the U.S. manufacturing sector in 1994, we find that firms typically protect the profits due to invention with a range of mechanisms, including patents, secrecy, lead time advantages and the use of complementary marketing and manufacturing capabilities. Of these mechanisms, however, patents tend to be the least emphasized by firms in the majority of manufacturing industries, and secrecy and lead time tend to be emphasized most heavily. A comparison of our results with the earlier survey findings of Levin et al. [1987] suggest that patents may be relied upon somewhat more heavily by larger firms now than in the early 1980s. For the protection of product innovations, secrecy now appears to be much more heavily employed across m...

Contact and additional information for this authorAll NBER papers and publicationsNBER Working Papers onlyInformation about this author at RePEc

 
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