Convergence in TFP among Italian Regions - Panel Unit Roots with Heterogeneity and Cross Sectional Dependence



Table 3: Panel Unit Root Tests of TFP - ln(yit)

All Regions (N=19)

Test Statistic P-value           Conclusion

LLC

-4.63

0.5183

No Convergence

IPS

-1.50

0.5330

No Convergence

MADF

139.53

26.38

Convergence

South (N=7)

Basilicata, Calabria, Campania, Molise, Puglia, Sardegna, Sicilia

Test

Statistic

P-value_____

Conclusion

LLC

-5.47

0.0214

Convergence

IPS

-2.17

0.0270

Convergence

MADF

69.84

26.38________

Convergence

Centre-North (N=12)

Emilia Romagna, Friuli V.G., Liguria, Lombardia, Piemonte
Trentino A.A., Veneto, Lazio, Marche, Toscana, Umbria, Abruzzo

Test Statistic P-value           Conclusion

LLC

-2.62

0.6624

No Convergence

IPS

-1.29

0.8190

No Convergence

MADF

71.32

26.38

Convergence

Centre (N=5)

Lazio, Marche, Umbria, Toscana, Abruzzo

Test

Statistic

P-value____

Conclusion

LLC

-1.77

0.4974

No Convergence

IPS

-0.94

0.9260

No Convergence

MADF

9.84

26.38

No Convergence

North (N=7)

Friuli V.G., Liguria, Lombardia, Piemonte, Trentino A.A.
Veneto, Emilia Romagna

Test

Statistic P-value           Conclusion

LLC
IPS
MADF

-3.28     0.2584           No Convergence

-1.34     0.7000           No Convergence

20.09_____26.38____________No Convergence_________

For MADF, the critical value is reported instead of the p-value

23



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