An export demand equation estimation for Tunisia through an unobservable component model
by Rafiaa Zayani; Kamel Helali
International Journal of Business Competition and Growth (IJBCG), Vol. 5, No. 4, 2016

Abstract: This paper analysed the development of the external sector for Tunisia and its main competitors and quantified the dynamic contributions of the trade key determinants of export volumes behaviour. In addition to the traditional variables affecting export volumes, price and foreign demand, an unobservable time-varying component is involved in the export equations to capture the underlying non-price competitiveness. The structural modelling approach used within an error correction framework allows isolating the different trade fluctuations sources and assessing each variable contribution to export flows. The findings confirm the existence of stochastic trends, due to technical change and other exogenous factors, causing the export flows. Thus, the failure to take these trends into account would lead to biased long-run price elasticity estimates.

Online publication date: Sun, 12-Feb-2017

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