The relationship between the relative growth rate and relative income can thus be
calculated in two ways: by estimating (24) and (31) and using equation (33) or by
estimating (35) directly.
6. THE ESTIMATIONS AND SCENARIOS
6.1 The Model for the Attraction of Investments
The above model (31) for change in investment level is now estimated by WLS as
GI = .0040914 - .0027593Y2 - .0011928Y3 - .0001704Y4 + 7.927e-06Y5
(4.21) (-6.07) (-6.89) (-7.33) (7.52)
+ (3.41e-05 - 3.92e-05Y +1.62e-05Y2 - 3.07e-06Y3 +2.72e-07Y4 - 9.21e-09Y5)DY
(2.49) (-2.54) (2.52) (-2.44) (2.33) (-2.23)
- (.004091 + .032782Y - .016265Y2 + .003758Y3 - .000400Y4 + 1.588e-05Y5)DY2
(-1.77) (2.01) (-2.30) (2.62) (-2.92) (3.18)
R2 = .6863 Adj.R2 = .6630 Obs = 232
Year, Y, takes the values 1 - 9 for the years 1988-1996.
The estimated GI-function is shown in figure 1.
6.2 The Investment-Growth Model
The equation for the growth rate as a function of the growth in direct foreign
investments is estimated to
GY1 = .09117 + (8.3743 -.0008348DY1)*GI1
1 (21.61) (5.09) (-1.97) 11
+.0367* (8.3742 -.0008348DY1)*(8.3742 - .0008348DY2)*GI2
(1.24) (5.09) (-1.97) 1 (5.09) (-1.97) 22
- .1606*DUM89
(-15.20)
R2 = .6046 Adj.R2 = .5976
All signs are as theoretically expected. The coefficients of the neighbor regions are
insignificant, however, highly plausible (see also appendix 4 for alternative
estimations).
The change in investment level will change the equilibrium income. Normally it is
expected to happen over more than one year. The data, however, showed no time lag
in the adaption. This could indicate that the friction in the regions is close to zero
possibly due to “unlimited” accession to qualified labor force.
12