Galor has made significant contributions to the study of development traps , population economics , the relationship between fertility , life expectancy , education , inequality and economic growth , technology and wage inequality , and the foundations of overlapping - generations models .
Galor has made significant contributions to the study of income distribution and economic growth , the transition from stagnation to growth , and human evolution and economic development . 
 He has made other significant contributions to the study of development traps , the ( demographic transition ) , and the advancement of the foundations of overlapping - generations models .