An Empirical Examination of the Averch-Johnson Effect

In this paper the Averch-Johnson thesis of a capital bias in regulated firms is examined empirically. This is accomplished by estimating a system of factor demand functions using individual plant data from the electric power industry. Results obtained do not provide support for the A-J effect and it is suggested that there are a number of reasons this could have been expected a priori. finally, the implied parameters of the production function are derived and presented; the values are in line with other estimates of the production function for the electric power industry.