In endogenous growth theories, with the endogeneity of technology and its inclusion into the model, the new
technologies produced by individuals equipped with knowledge, skills, and experience by using this technology
were regarded as the human capital investments of countries. Later, the effects of human capital on economic
growth became a significant topic in the empirical literature. In this study, initially the basic approaches to human
capital were theoretically investigated. Then, the relationships between human capital and economic growth were
analyzed with cointegration and causality tests by using the data of Turkey for the period 1961-2011. Our findings
revealed a dual causality relationship between human capital and economic growth variables.