This paper exploits the properties of the third order approximation of the translog cosl function lo estimate the input demand elasticities and factor-saving biases of technological change for UK agriculture. Then, cointegration techniques are used to determine the time series properties of the...

Technical change is inherently unobservable and has conventionally been represented by proxy variables, from simple time trends to more sophisticated knowledge stock variables. This paper follows Lambert and Shonkwiler (1995) in modelling technical change as a stochastic unobservable variable...