Özet:

The aim of this study is to evaluate economic improvement of US. For this purpose, the quarterly data for the periods between 1947 and 2015 is taken into the consideration. Therefore, focusing on this long period provides a historical view so that more appropriate results can be achieved. Moreover, economic growth of US is considered as dependent variable whereas four different subtitles of GDP (consumption, private investment, government expenditure and net export) are selected as independent variables. Furthermore, multivariate adoptive regression spline (MARS) methodology is used in the analysis process. The findings show that private investment, government expenditure and net export have a positive relationship between economic growth. It is identified that the positive effect reduces when the percentage of government expenditure exceeds 22.2%. On the other side, in case of negative net export and having lower investment ratio than 16.3%, economic development of US will be affected negatively. These results give very important information that instead of consumption, other three subtitles of GDP make a contribution to the economic development of US. By considering these results, it is recommended that US should mainly implement growth strategies by focusing on private investment and net export. Within this framework, tax advantages for these investors can be provided to reach this objective. In addition to this condition, government should also give incentives to improve industrial production so that investment and export can be increased.

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