The impact of technical change on the aggregate production function

This study endeavours to look at both disembodied technical progress and embodied technical progress in the capital stock and in the labour force in the United States over the period 1947–80. The results suggest that disembodied technical progress has been about 3% per year, embodied technical progress in the capital stock is approximately 3–4% per year and educational attainment significantly enhances labour productivity. Finally, when the issue of structural stability of the underlying production relationship is addressed, the period 1971–80 gives rise to some inconsistency.