Knowledge accumulation in the richer countries provides them with comparative advantages in higher productivity … products. The countries that import the higher productivity intermediate products and capital equipments produced in the richer …

Knowledge accumulation in the richer countries provides them with comparative advantages in higher productivity … products. The countries that import the higher productivity intermediate products and capital equipments produced in the richer … productivity level associated with a country's imports. Using instrumental variable method (to address the endogeneity problems …