gi=α+β0logyi,0+β1logni+β2logsi+γXi+εig_i=\alpha+\beta_0\log y_{i,0}+\beta_1\log n_i+\beta_2\log s_i+\gamma X_i+\varepsilon_igi=α+β0logyi,0+β1logni+β2logsi+γXi+εi. The Solow model predicts the sign of β0\beta_0β0:
negative
positive
zero
inconclusive
