Abstract
GMM estimation of autoregressive equations in error-ridden variables with error memory is considered in exploring the impact of foreign direct investment (FDI) on GDP from country panel data, contrasting, inter alia, the manufacturing and the service sector. To evaluate finite-sample properties of the methods selected, results from Monte Carlo simulations are reported. Contrary to the previous findings, no negative spillover effects from the service FDI on manufacturing GDP growth are obtained; the estimates indicate a positive effect, while (surprisingly) the effect of service FDI on the service GDP growth comes out as insignificant. Overall conclusions are: (1) Aggregate FDI has a positive, but insignificant effect on aggregate GDP based on the full country panel; (2) for the developing Asian countries, FDI significantly improves GDP growth; and (3) manufacturing FDI impacts both manufacturing and service GDP growth positively.
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Notes
Griliches and Hausman (1986), Biørn (2000), Wansbeek and Meijer (2000, section 6.9), Wansbeek (2001), Biørn and Krishnakumar (2008, Section 10.2) and Xiao et al. (2007, 2010) exemplify the static case with measurement errors. Arellano and Bond (1991), Ahn and Schmidt (1995), Arellano and Bover (1995) and Blundell and Bond (1998) exemplify the error-free AR-case.
Only the core elements of the model framework are given and elaborated here; Biørn (2015, Section 2), gives a fuller discussion. In the simulation setup, see Appendix 1, \(\varvec{\xi }_{it}\) is generated as the sum of a moving average component with memory \(N_\xi \) and a time-invariant component, giving \(\Delta \varvec{\xi }_{it}\) a memory equal to \(N_\xi +1\), as differencing removes any time-invariant component.
The simulations are performed by a computer program in the Gauss software code constructed by the authors. The standard errors are calculated from the GMM formulae, as described in Biørn and Krishnakumar (2008, Section 10.2.5).
From the R environment for statistical computing (http://www.r-project.org/), the modules plm and pgmm are used.
Three countries, Chile, Malaysia and Slovenia, had to be excluded; see footnote 9 below for the full list.
The countries are Azerbaijan, Bangladesh, Cambodia, China, Fiji, Georgia, India, Indonesia, Kazakhstan, Korea, Rep., Lao PDR, Malaysia, Maldives, Mongolia, Nepal, Pakistan, Papua New Guinea, Philippines, Samoa, Sri Lanka, Tajikistan, Thailand, Uzbekistan and Vietnam, giving a balanced panel dataset for the years 2002–2009.
The countries included are Australia, Austria, Cambodia, Chile, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Iceland, Indonesia, Ireland, Japan, Lao PDR, Malaysia, Mexico, Netherlands, Norway, Philippines, Portugal, Singapore, Slovak Republic, Slovenia, Spain, Sweden, Thailand, Turkey, the UK, the USA and Vietnam.
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Acknowledgements
A preliminary version of the paper was presented at the 20th International Conference on Panel Data, Tokyo, July 2014. We thank Tom Wansbeek, editor Badi Baltagi and a referee for helpful comments. The views expressed are those of the authors and do not necessarily reflect the views and policies of the Asian Development Bank or its Board of Governors or the governments they represent.
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Appendices
Appendix 1: Design of simulations
This appendix describes the Monte Carlo simulation framework for the general model (1) The processes generating \((\varvec{\eta }_{it},\nu _{it},u_{it},\varvec{\xi }_{it})\) are, respectively:
\(\mathsf{{IIN}}\) denotes ‘identically independently normal’ and subscript K indicates the distribution’s dimension. Heterogeneity is generated by \(\alpha _i\sim \mathsf{{IIN}}_1(0,\sigma _\alpha ^2)\). These assumptions in combination with (1) and (2) imply
Since \(\varvec{\chi }_i\) and \(\alpha _i\) enter the model asymmetrically and the variables in levels and in differences fill opposite roles in the estimators \(\widetilde{\varvec{\gamma }}_L\) and \(\widetilde{\varvec{\gamma }}_D\), given by (9) and (10), changes in heterogeneity, measured by \(\sigma _\chi ^2\) and \(\sigma _\alpha ^2\), affect the estimators’ distribution in quite different ways. For example, changes in \(\bar{\varvec{\chi }}\) or in \(\sigma _\chi ^2\) affect \(\varvec{q}_{it}\) and \(y_{it}\), but not \(\Delta \varvec{q}_{it}\) or \(\Delta y_{it}\), since differencing eliminates any time-invariant variable, while a change in \(\sigma _\alpha ^2\) affects only the distribution of the level \(y_{it}\). The \(\mu _{it}\) process is initialized by using as start values the ‘long-run expectation’ \(\mu _{i0}=\mathsf{{E}}[\mu _{it}/(1-\lambda \mathsf{{L}})]=\bar{\varvec{\chi }}\varvec{\beta }/(1-\lambda )\). \(R=500\) replications are performed. The baseline parameter set is:
- Coefficients::
-
\((\beta _1,\beta _2,\lambda )= (0.6,0.3,0.8)\).
- Auxiliary matrices::
-
\(\varvec{I}_2=\left[ \begin{array}{cc} 1 &{} 0\\ 0 &{} 1\end{array}\right] \varvec{J}_2=\left[ \begin{array}{cc} 1 &{} \frac{1}{2}\\ \frac{1}{2} &{} 1 \end{array}\right] \)
- \(\varvec{\xi }_{it}\, \mathrm{process}:\) :
-
\((\bar{\chi }_1,\bar{\chi }_2)=(5,10);\)
\(\sigma _\chi ^2=0.1; \varvec{\Sigma }_\chi =\textstyle \sigma _\chi ^2\varvec{J}_2;\)
\(\sigma _\psi ^2=1; \varvec{\Sigma }_\psi =\sigma _\psi ^2\varvec{I}_2;\)
\(N_\xi =4: \quad \varvec{A}_s=(1-\frac{s}{5})\varvec{I}_2,s=0,1,\ldots ,4.\)
\(\Longrightarrow \ {\mathrm {diag}}[\mathsf{{V}}(\varvec{\xi }_{it})]: \quad \sigma _{\xi 1}^2=\sigma _{\xi 2}^2= \sigma _\chi ^2+\sigma _\psi ^2\times 2.200.\)
- \(\varvec{\eta }_{it} \,\mathrm{process}:\) :
-
\(\sigma _\epsilon ^2=0.1;\ \ \ \varvec{\Sigma }_\epsilon =\sigma _\epsilon ^2\varvec{I}_2;\)
\(N_\eta =0: \ \ \varvec{B}_0=\varvec{I}_2;\)
\(N_\eta =1: \ \ \varvec{B}_0=\varvec{I}_2,\ \ \varvec{B}_1=\frac{1}{2}\varvec{I}_2;\)
\(N_\eta =2: \ \ \varvec{B}_0=\varvec{I}_2,\ \ \varvec{B}_1=\frac{2}{3}\varvec{I}_2, \ \ \varvec{B}_2=\frac{1}{3}\varvec{I}_2;\)
\(\Longrightarrow \ {\mathrm {diag}}[\mathsf{{V}}(\varvec{\eta }_{it})]:\ \ \sigma _{\eta 1}^2=\sigma _{\eta 2}^2=\left\{ \begin{array}{ll} \sigma _\epsilon ^2\times 1.000, &{} N_\eta =0.\\ \sigma _\epsilon ^2\times 1.250, &{} N_\eta =1.\\ \sigma _\epsilon ^2\times 1.556, &{} N_\eta =2.\end{array}\right. \)
- \(\alpha _i\,\mathrm{process}:\) :
-
\(\sigma _{\alpha }^{2}=0.1\).
- \(u_{it}\,\mathrm{process}:\) :
-
\(\sigma _v^2=\sigma _u^2=0.1\);
\(N_u=0,\,c_0=1\).
- \(\nu _{it}\, \mathrm{process}:\) :
-
\(\sigma _\delta ^2=0.1\);
Appendix 2: Persistence and long-run responses
Tables 10 and 11 give simulation results to illustrate contrasts between short-run and long-run responses and between the precision with which they are estimated. They specifically exemplify the impact on the mean estimates of \((\beta _1,\beta _2,\lambda )\) and their long-run counterparts \([\beta _1/(1-\lambda ), \beta _2/(1-\lambda )]\) when persistence, represented by \(\lambda \), varies. The entries in bold are the input values used in the simulations. We find that the \((\beta _1,\beta _2)\) estimates are negatively biased in all examples, including the static as well as the static and the weak and strong autoregression cases (\(\lambda =0, 0.2, 0.8\), respectively), with one exception: \(\beta _2\) is approximately unbiased (mean estimate 0.3004) for \(\sigma _\psi ^2=1\) and \((N_\xi ,N_\eta ,N_\nu )=(4,0,0)\). For \(\lambda \), the sign of the bias differs between the level and difference versions of the equation. For the level version, there is a positive bias, which is increased when an error memory is introduced or the signal variance is reduced. For example, with \((\beta _1,\beta _2,\lambda )=(0.3,0.6,0.0)\), the mean \(\lambda =0.0178\) for (\(N_\xi ,N_\eta ,N_\nu )=(4,0,0)\) under large signal spread increases to 0.0381 under small signal spread or increases to 0.0661 under large signal spread for \((N_\xi ,N_\eta ,N_\nu )=(4,1,0)\). For the difference version, there is a negative bias, with a magnitude similar to that of the level version.
The results for the long-run coefficients depart in several respects from those for the short-run coefficients. First, the conclusion that biases are smaller when the signal spread is large \((\sigma _\psi ^2=1)\) than when it is small \((\sigma _\psi ^2=0.5)\) does not hold invariably for the long-run coefficients. An example is provided for the equation in levels for \((\beta _1,\beta _2,\lambda )=(0.3,0.6,0.0)\) and \((N_\xi ,N_\eta ,N_\nu )=(4,2,0)\). Secondly, the systematic negative bias of \((\beta _1,\beta _2)\) does no longer hold. For example, for the equation in levels, \((\beta _1,\beta _2,\lambda )=(0.3,0.6,0.0)\) and \(\sigma _\psi ^2=1\) give \(\beta _1/(1-\lambda )=0.3010\) (i.e., a small positive bias) when (\(N_\xi ,N_\eta ,N_\nu \))\( = \)(4,1,0) and \(\beta _1/(1-\lambda )=0.2990\) (i.e., a small negative bias) when \((N_\xi ,N_\eta ,N_\nu )=(4,2,0)\). Finally, for the equation in differences, the long-run coefficients are still negatively biased. The biases increase when an error memory is introduced or the signal variance is reduced. A comparison of Tables 10 and 11 shows that when long-run effects of exogenous variables are our main concern, the attraction of keeping equations in levels and using IVs in differences is strengthened.
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Biørn, E., Han, X. Revisiting the FDI impact on GDP growth in errors-in-variables models: a panel data GMM analysis allowing for error memory. Empir Econ 53, 1379–1398 (2017). https://doi.org/10.1007/s00181-016-1203-4
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DOI: https://doi.org/10.1007/s00181-016-1203-4