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...

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...

When the top personal tax rates are above the corporate rate, high-income individuals have an incentive to reclassify their earnings as corporate rather than personal income for tax purposes. U.S. tax law at least imposes strict limits on the extent to which employees in publicly traded...