The inadequacy of linear autoregressive model for real exchange rates: empirical evidence from Asian economies
Abstract:Utilizing the formal linearity test of Luukkonen, Saikkonen and Teräsvirta (Biometrika, 75, 491-99, 1998) as diagnostic tool, the empirical finding suggests that the linear autoregressive (AR) model is inadequate in describing the real exchange rates behaviour of 11 Asian economies. It is noted that the conventional battery of diagnostic tests is capable of identifying the inadequacy of the linear model in only three of these series. Moreover, the linearity nature of this behaviour has been formally rejected in favour of the non-linear smooth transition autoregressive (STAR) model. The finding of non-linearity in the data generating process of these real exchange rates warrants that the use of linear framework in empirical modelling and statistical testing procedures in the field of exchange rates may lead to an inappropriate policy conclusions.
Document Type: Research Article
Affiliations: 1: Department of Economics, Faculty of Economics and Management, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia 2: Department of Economics, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong 3: Labuan School of International Business and Finance, Universiti Malaysia Sabah, PO Box 80594, 87015 W.P. Labuan, Malaysia
Publication date: August 12, 2003