SSE/EFI Working Paper Series in Economics and Finance,
Stockholm School of Economics

Abstract: This paper analyzes the net barter terms of trade measured by the primary commodity price index relative to the index of unit values of export of manufactures from industrial countries. The starting-point is that the series is stationary but possibly nonlinear. Statistical tests indicate that the logarithmed series is nonlinear, and we estimate a Smooth Transition Autoregressive model to describe the process. The dynamics of the model are illustrated by use of parametrically estimated local spectra and generalized impulse response functions. Our model encompasses models from several previous studies, and our conclusion is that the starting-point of the empirical analysis very much determines the outcome.

Keywords: Development economics; encompassing; generalized impulse response function; local spectrum; nonlinearity; raw material prices; smooth transition autoregression.

JEL-codes: C22; C52; O13

31 pages, September 23, 1999

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Published as

Anna Persson and Timo Teräsvirta, (2003), 'The net barter terms of trade: A smooth transition approach', International Journal of Finance and Economics, vol 8, pages 81-97

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