Trade Liberalization and Economic Growth in Iranian Economy

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1. Introduction In the current era of globalization, trade liberalization emerges as one of the most serious policy concerns for governments all over the world, especially for developing countries. Trade liberalization is believed to enhance economic growth and development through specialization and technological advances (Hoque and Yusop, 2010). The role of trade policy in economic development has been a key debate in the development literature for most of the second half of the twentieth century. Whereas the prevailing wisdom in the 1950s and 1960s favored import substitution, that in the 1970s and 1980s favored export promotion/outward orientation (Greenaway et al., 2002). There are number of empirical studies linking economic growth to the openness of the trade regime (Krueger, 1978; Heitger 1987; World Bank 1987; Romer 1989; Quah and Rauch 1990; Michaely et al., 1991; Dollar, 1992; Edwards, 1992; Harrison, 1995; Savvides, 1995; Bakht, 1998; Onafowora and Owoye, 1998). On the other hand, some other studies find little empirical evidence to support a link between trade liberalization and economic growth (see Sachs, 1987; UNCTAD, 1989; Shafaeddin, 1994; Clarke and Kirkpatrick, 1992; Greenaway and Sapsford, 1994; Karunaratne, 1994; Jenkins, 1996; Greenaway et al., 1997). A possible link between openness and growth has been an important factor in stimulating an unprecedented wave of unilateral trade reforms, with over 100 countries committing to some kind of trade liberalization over the last 20 years. Many of these programmes have been voluntary; most however have been tied to the policy conditionality which is central to World Bank Structural Adjustment Loans (SALs) . Indeed, trade reforms account for a higher proportion ... ... middle of paper ... ... have a small sample size. It is well known that the Engle & Granger (1987) and Johansen (1988, 1995) methods of cointegration are not reliable for small sample sizes, such as that in the present study. Several previous studies, however, have applied the ARDL approach to relatively small sample sizes. Gounder (1999, 2002) has used the ARDL methodology to test empirically various growth hypotheses for Fiji using similar sample sizes to that in this study. Pattichis (1999), Mah (2000), Tang and Nair (2002) and Tang (2001, 2003) applied the ARDL bounds test approach to estimate the import demand function using small sample cases. Tang (2003) applied the ARDL Bounds test approach to estimate the import demand function for Japan with only 18 annual observations. We have 27 annual observations. Therefore, application of the ARDL Bounds test approach is very appropriate.

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