^*Jiandong Ju is an associate professor in the Department of Economics at the University of Oklahoma. Yi Wu is an economist with the IMF Western Hemisphere Department. Li Zeng is an economist with the IMF Asia and Pacific Department. The authors thank Maria Oliva Armengol, Beatriz A Maldonado-Bird, Azim Sadikov, Dustin Smith, and especially Tom Dorsey, Hans Peter Lankes, Brad McDonald, the editor, an anonymous referee for very helpful comments, and Xiangming Li for sharing her data set with us.

Abstract

Using two recently constructed measures of trade liberalization dates, this article studies the impact of trade liberalization on imports, exports, and overall trade balance for a large sample of developing countries. We find strong and consistent evidence that trade liberalization leads to higher imports and exports. However, in contrast to Santos-Paulino and Thirlwall (2004), who found a robustly negative impact of trade liberalization on the overall trade balance, we find only mixed evidence of such a negative impact. In particular, we find little evidence of a statistically significant negative impact using our first measure of liberalization dates, which extends Li (2004). Using a second measure of liberalization dates compiled by Wacziarg and Welch (2003), we find some evidence that liberalization worsens the trade balance, but the evidence is not robust across different estimation specifications, and the estimated impact is smaller than that reported by Santos-Paulino and Thirlwall (2004).