On the home market effect: theory and empirical evidence

This paper addresses the question of how to discriminate between the H-O paradigm and the C-H-O paradigm of international trade. The test is based on the home-biased expenditure. The model predicts a positive relationshipp between a country''s share of world''s output (in any particular sector) and the country''s share of world''s home-biased expenditure if and only if the sector is characterize4d by IRS and monopolistic competition. The Empirical implementation showed an important but not overwhelming presence of the relationship. Specifically, 55% of the industrial activity could be attributed to the H-O paradigm while 45% could be attributed to the C-H-O paradigm.