The Middle East and the United States: A Problem of “Brain Drain”

In explaining the determinants of economic growth, economists have attempted to distinguish the relative contributions made by various inputs. Theodore Schultz concluded that improvements in human capital have made larger contributions to growth than increases in physical capital. E. F. Denison was even more specific in his pioneering studies of changes in real national income in the United States from 1927 to 1967, estimating that 23 percent of the growth could be explained by improvements in the educational level of the labor force and 20 percent by advances in technological and managerial knowledge. On the basis of such results, we may conclude that expenditures on education and training, public health, and general research contribute significantly to productivity in the industrialized nations by raising the quality of human capital; thus these outlays command a continuing return in the future.