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Is per capita real GDP stationary in African countries? Evidence from panel SURADF test

  • Tsangyao Chang
  • Hsu-Ling Chang
  • Hsiao-Ping Chu
  • Chi-Wei Su

This note uses the newly developed panel SURADF tests advanced by Breuer et al. (2001) to investigate the time-series properties of real GDP for 47 African countries for the period 1980 to 2004. While the other Panel-based unit root tests are joint tests of a unit root for all members of the panel and are incapable of determining the mix of I(0) and I(1) series in the panel setting, the Panel SURADF tests a separate unit-root null hypothesis for each individual panel member and, therefore identifies how many and which series in the panel are stationary processes. The empirical results from several panel-based unit root tests indicate that the per capita real GDP for all the countries studied are non-stationary, however, when Breuer et al.'s Panel SURADF tests are conducted, one finds unit root in per capita real GDP only exist in two-third of countries studied. These results have important policy implications for African countries.

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Article provided by Taylor & Francis Journals in its journal Applied Economics Letters.

Volume (Year): 13 (2006)
Issue (Month): 15 ()
Pages: 1003-1008

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Handle: RePEc:taf:apeclt:v:13:y:2006:i:15:p:1003-1008
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  1. Yin-Wong Cheung & Frank Westermann, 1999. "Output Dynamics of the G7 Countries - Stochastic Trends and Cyclical Movements," CESifo Working Paper Series 220, CESifo Group Munich.
  2. Sarno, Lucio & Taylor, Mark P, 1997. "The Behaviour of Real Exchange Rates During the Post-Bretton Woods Period," CEPR Discussion Papers 1730, C.E.P.R. Discussion Papers.
  3. Nelson, Charles R. & Plosser, Charles I., 1982. "Trends and random walks in macroeconmic time series : Some evidence and implications," Journal of Monetary Economics, Elsevier, vol. 10(2), pages 139-162.
  4. Im, Kyung So & Pesaran, M. Hashem & Shin, Yongcheol, 2003. "Testing for unit roots in heterogeneous panels," Journal of Econometrics, Elsevier, vol. 115(1), pages 53-74, July.
  5. Breuer, Janice Boucher & McNown, Robert & Wallace, Myles S, 2001. "Misleading Inferences from Panel Unit-Root Tests with an Illustration from Purchasing Power Parity," Review of International Economics, Wiley Blackwell, vol. 9(3), pages 482-93, August.
  6. Levin, Andrew & Lin, Chien-Fu & James Chu, Chia-Shang, 2002. "Unit root tests in panel data: asymptotic and finite-sample properties," Journal of Econometrics, Elsevier, vol. 108(1), pages 1-24, May.
  7. Tsangyao Chang & Yuan-Hong Ho & Steven Caudill, 2010. "Is per capita real GDP stationary in China? More powerful nonlinear (logistic) unit root tests," Applied Economics Letters, Taylor & Francis Journals, vol. 17(14), pages 1347-1349.
  8. David E. Rapach, 2002. "Are Real GDP Levels Nonstationary? Evidence from Panel Data Tests," Southern Economic Journal, Southern Economic Association, vol. 68(3), pages 473-495, January.
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