This study examines the impacts of national innovation systems (NIS) and economic complexity index (ECI) on economic growth. A composite index of NIS is developed by using US patent data as a weighted sum of three, four or five variables among the following: concentration of assignees,...

In the catch-up literature, more attention has been paid to the rate rather than the direction of technological change. This paper presents and implements a novel methodology to identify and measure the effects of the direction of technological change in terms of technological congruence and its...