In this paper we investigate the extent to which the U.S. income tax system of 2004 collects tax on capital income, and the implications of extending tax-preferred savings accounts. We do so by applying a methodology that estimates how much tax is collected on capital income by calculating how...

This paper develops an econometric model of the effects of R&D effort on the magnitude and characteristics of technical change in the Bell system. We estimate simultaneously a vintage capital production function, embodying several distinct types of capital, and various factor demand functions...