Abstract. In this study, the effect of saving-investment gap on economic growth was analyzed on sample of 65 developing countries for 1981-2014 period. Firstly, these countries were categorized into sub-groups according to their saving-investment gap data by using clustering analysis. Then, panel unit root were performed for each cluster and overall panel, and panel coefficients were estimated. In conclusion; it was determined that while the effect of saving on economic growth is positive and statistically significant in developing countries which have savings over investment, this effect is negative and statistically insignificant in developing countries which have investment over savings. It was considered that this study will bring novelty to literature since it combined panel data analysis and clustering analysis together.

Keywords: Saving-Investment Gap, Sustainable Economic Growth, Developing Countries, Clustering Analysis, Panel Data Analysis.