This paper describes an econometric growth model of the neoclassic type for the analysis of changes in the technological structure of the economy. The main purpose of the model analysis is to compare the influence of different investment policies on the formation of the technological structure in the economy and to estimate its impacts on basic economic indicators of growth and efficiency. 

The central model construction consists in the disintegration of the whole economy into three technological levels (high-tech, medium-tech and low-tech). The development of each level is described by its own production function (CES or the Cobb-Douglas type). The levels are added by capital formation, investment and the labor demand models. All of them are united in one economic growth model. The long-term development for these three levels is illustrated and forecasted up to the year 2010.