The t-statistics have been adjusted

The t-statistics have been adjusted for heteroscedasticity using White’s heterosce- dasticity-consistent errors. The link test is a test for specification error in the form of incorrect functional form and is performed by regressing the dependent vari- able on its fitted values and the squares of the fitted values. The probability value reported in the table is the significance level of the coefficient estimate for the fitted values squared. One should note that the results have not been adjusted for spatial autocorrelation. Also, the issue of the MAUP remains to be addressed.