Economic Complexity: Correlations between Gross Domestic Product and Fitness.

In this paper we study the causal relation between country Economic Fitness and its Gross Domestic Product per capita. Using the Takens' theorem, as first suggested in (Sugihara, G. et al. 2012), we show that there exists a reasonable evidence of causal correlation between and for relatively rich countries. This is not the case for relatively poor countries where and do not show any significant causal relation. We also present some preliminary results to understand whether or are driving factor for economic growth.