PDF, GB, 56 p., 1,3 Mo - Femise

PDF, GB, 56 p., 1,3 Mo - Femise PDF, GB, 56 p., 1,3 Mo - Femise

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4) Ln( X ij ) = ! 0 + ! 1 Ln( GDP i ) + ! 2 Ln( Pop i ) + ! 3 Ln( GDP j ) + ! 4 Ln( Pop j ) + ! 5 Ln( Dist ij ) + ! 6 PTA ij + ! 7 Border ij + ! 8 Language ij + ! 9 Tariff ij + ! 10 ROO ij + e ij where the following are the relevant dummy variables : PTAij: represents the relevant free trade agreements (EU, CEFTA & EFTA). Borderij: assesses the potential role of a common border between countries Languageij: assesses the potential role of a common language between countries Tariffij: gives the average tariffs between countries ROOij: gives the rules of origin dummy variable whose formulation is discussed in more detail below. And where Xijt is the real bilateral export from i to j in period t, and GDPit and GDPjt are the real GDP’s of i and j and γt are year dummies. 3.2 Panel Estimation: difference in difference The statistical analysis we use to establish a lower bound on the impact of ROOs is a technique called difference-in-difference analysis. This compares the behaviour of two groups of bilateral trade flows. The ‘treatment’ group includes all the bilateral trade flows that should have been boosted by the PECS. The ‘control’ group is made up of the bilateral trade flows that should not have been affected by the PECS. In essence, the procedure is to compare how much treatment-group trade flows rose as a result of cumulation (this is the first difference) and compare this with the change in flows for the control group (the second difference) - hence the term difference-indifferences. Consider the graphs below. Here we are plotting the imports relative to imports in 1997 between those countries, which could have been directly affected by the cumulation of rules of origin, and their imports from other sources. We do this for four sample industries. If the cumulation of rules of origin indeed had an impact than we would expect trade between newly cumulating countries to rise by more that trade between these countries and third countries. The graph is quite striking as it suggest that in at least 3 cases – 322, 323, and 331 that there was indeed a difference in the evolution of trade between the newly cumulating countries.

1.2 1.4 .8 1 1.1 .8 .9 1 322 323 .8 1 1.21.41.6 1.2 1.4 324 331 .8 1 1995 1996 1997 1998 1999 1995 1996 1997 1998 1999 Graphs by ISICRev2 ROO countries imports by source year ROO countries EU ROW Of course, the introduction of cumulation was not the only thing that changed between the pre-1997 and post-1997 periods, hence we use the gravity model to control for other factors. Additionally, we control for all sorts of unobservable pairspecific factors (e.g. historical ties, business networks, etc.) by employing a statistical technique called fixed effects at the country-pair level. We also hope that this goes some way to correcting for the issue of reverse-causality (namely, the idea that membership in PECS may have been more likely for nations with high spoke-spoke trade flows, so trade is influencing PECS membership rather than vice versa). The ROO and ROO+TD dummies. In order to pick up on the effect of cumulation we therefore introduce a dummy variable which switches from zero to 1, when the PECS is introduced between any pair of countries. We then consider the change in trade over that time period and compare it to the change in trade for those countries who were not part of the PECS system. However, the introduction of preferences via a FTA, and the impact of rules of origin will tend to affect trade flows in the same direction. The classical analysis of an FTA suggests that granting preferential access leads to both trade diversion (with respect to the rest of the world) and trade creation (with respect to partner countries). Diagonal cumulation may also lead to increased trade diversion and trade creation. However, the impact of preferences on trade diversion will only apply when the spokes offer preferential access to the EU and not to the other spokes. If the spokes also have a free trade agreement between themselves, than the issue of trade diversion should not apply. Similarly if a spoke has an asymmetric trade agreement with the EU, where it is the EU which is offering tariff free access to its market but not vica versa, then again trade diversion should not be an issue (this is because the spoke levies the same tariff on imports from all sources so no trade diversion arises with respect to its trade with third nations).

4)<br />

Ln(<br />

X<br />

ij<br />

) = !<br />

0<br />

+ !<br />

1<br />

Ln(<br />

GDP<br />

i<br />

) + !<br />

2<br />

Ln(<br />

Pop<br />

i<br />

) + !<br />

3<br />

Ln(<br />

GDP<br />

j<br />

) +<br />

!<br />

4<br />

Ln(<br />

Pop<br />

j<br />

) + !<br />

5<br />

Ln(<br />

Dist<br />

ij<br />

) + !<br />

6<br />

PTA<br />

ij<br />

+ !<br />

7<br />

Border<br />

ij<br />

+<br />

!<br />

8<br />

Language<br />

ij<br />

+ !<br />

9<br />

Tariff<br />

ij<br />

+ !<br />

10<br />

ROO<br />

ij<br />

+ e<br />

ij<br />

where the following are the relevant dummy variables :<br />

PTAij: represents the relevant free trade agreements (EU, CEFTA & EFTA).<br />

Borderij: assesses the potential role of a common border between countries<br />

Languageij: assesses the potential role of a common language between countries<br />

Tariffij: gives the average tariffs between countries<br />

ROOij: gives the rules of origin dummy variable whose formulation is<br />

discussed in more detail below.<br />

And where Xijt is the real bilateral export from i to j in period t, and GDPit and GDPjt<br />

are the real GDP’s of i and j and γt are year dummies.<br />

3.2 Panel Estimation: difference in difference<br />

The statistical analysis we use to establish a lower bound on the impact of ROOs is a<br />

technique called difference-in-difference analysis. This compares the behaviour of<br />

two groups of bilateral trade flows. The ‘treatment’ group includes all the bilateral<br />

trade flows that should have been boosted by the PECS. The ‘control’ group is made<br />

up of the bilateral trade flows that should not have been affected by the PECS. In<br />

essence, the procedure is to compare how much treatment-group trade flows rose as a<br />

result of cumulation (this is the first difference) and compare this with the change in<br />

flows for the control group (the second difference) - hence the term difference-indifferences.<br />

Consider the graphs below. Here we are plotting the imports relative to imports in<br />

1997 between those countries, which could have been directly affected by the<br />

cumulation of rules of origin, and their imports from other sources. We do this for<br />

four sample industries. If the cumulation of rules of origin indeed had an impact than<br />

we would expect trade between newly cumulating countries to rise by more that trade<br />

between these countries and third countries. The graph is quite striking as it suggest<br />

that in at least 3 cases – 322, 323, and 331 that there was indeed a difference in the<br />

evolution of trade between the newly cumulating countries.

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