Technological progress modes under constraint of technology gap and human capital

Based on the RD endogenous growth model with imitation and innovation,this paper analyzes the decisive factors of technological progress modes of lagging countries and the impact of technological policy un- der the assumption that heterogeneous human capital plays different role in imitation and innovation.It sug- gests that technological progress modes are determined by technology gap and the composition of human cap- ital,and that the effects of technological policy depend on technology gap under the constraint of human cap- ital.The policy implication is obvious:lagging countries should choose appropriate technological progress modes based on RD resources and technological levels,and technological policies should be different and dy- namic according to the changing of the dominant technological progress mode in different industries and regions.