Information Technology and the World Economy*
研究了1989-2003年间信息技术投资对全球经济增长的影响，发现产出增长主要源于投入增长而非生产率提升，且IT投资贡献在工业化经济体和亚洲发展中地区尤为显著。
Abstract This paper addresses the impact of investment in information technology (IT) on the recent resurgence of world economic growth. We describe the growth of the world economy, seven regions and 14 major economies during the period 1989–2003. We allocate the growth of world output between input growth and productivity and find, surprisingly, that input growth greatly predominates! The contributions of IT investment have increased in all regions, but especially in industrialized economies and Developing Asia. Differences in per capita output are explained by differences in per capita input, rather than by variations in productivity.