Alternative approaches to estimating the effects of nontariff measures (NTMs) on trade flows are discussed and evaluated critically. Recent econometric studies point to three results: (i) NTM restrictiveness measures based on an aggregate of ‘core’ NTMs are more restrictive than existing...

With the reduction in tariff barriers, Non-tariff and behind-the-border measures (NTM and BTB) have increased in importance. This paper surveys the state of knowledge with the view to drawing implications for policy suggestions to reduce those NTM barriers that are welfare reducing. Following a...

Preferential market access, either in the recent OECD initiatives or in the North-South FTAs, requires the use of rules of origin (RoO). Recent studies have questioned the extent of market access provided by these preferences. Using data on Mexican exports to the US in 2001, this Paper estimates...

Building on earlier work by Estevadeordal, we construct a synthetic index (R-index) intending to capture the restrictiveness on market access due to product specific rules of origin (PSRO) that apply at the tariff-line level. The R-index is constructed for rules of origins under NAFTA and under...

This paper estimates the effective market access granted under NAFTA in textiles and apparel by combining two approaches. First, we estimate the effect of tariff preferences and rules of origin on the border prices of Mexican final goods exported to the US and of US intermediates exported to...

This paper reports panel gravity estimates of aggregate bilateral trade for 130 countries over the period 1962-96 in which the coefficient of distance is allowed to change over time. In a standard specification, in which transport costs are proxied only, it is found paradoxically that the...