生产力
数据包络分析
产品创新
产业组织
索引(排版)
产品(数学)
全要素生产率
新产品开发
业务
经济
计量经济学
营销
统计
计算机科学
数学
经济增长
几何学
万维网
作者
Keun Jae Lee,Sang Mok Kang
标识
DOI:10.1080/12265080701694512
摘要
Abstract The purpose of this paper is to investigate productivity growth according to three types of innovation: product innovation, product improvement, and process innovation, using firm-level data from the Korea Innovation Survey 2002 about Korean manufacturing companies. This study is conducted in two steps. The first step measures firm-level Malmquist productivity index by data envelopment analysis (DEA). The second step estimates econometric regression models by weighted least square utilizing the productivity index as a dependent variable and each of the innovation types and other characteristics of firms as independent variables. The empirical results partly support the idea that the types of innovation matter in productivity growth. Specifically, process innovation may result in higher productivity performance than product innovation in the short run. This result stems from the difference in efficiency growth when productivity growth is decomposed into two components: efficiency growth and technical growth. That is, product innovation by definition involves product development and radical innovation and so, it can deteriorate efficiency growth relative to other types of innovation due to the process of product development and the adjustments that are needed to new innovations whereas process innovation is implemented to reduce defects, lead time, costs and other factors, and as such is very efficiency orientated. Consequently it helps improve efficiency growth.
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