The availability of efficiency estimation software –freely distributed via the internet and relatively easy to use –recently inflated the number of corresponding applications. The resulting efficiency estimates are often used without a critical assessment with respect to the literature on...

This research contributes to the ongoing discussion on functional flexibility and theoretical consistency by comparing the empirical performance of two second order flexible functional forms - the Symmetric Generalized McFadden and the Transcendental Logarithmic. It proposes an estimation...