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      Unit roots in macroeconomic time series: theory, implications, and evidence

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          Abstract

          The theme of unit roots in macroeconomic time series has received a great amount of theoretical and applied research in the last two decades. This paper presents some of the main issues regarding unit root tests, explores some of the implications for macroeconomic theory and policy, and reviews the recent evidence on the presence of unit roots in GDP series for Latin American countries. We conclude that a consensual view on many of the aspects involved has not emerged from this literature.

          Translated abstract

          A existência de raízes unitárias em series temporais macroeconômicas tem sido objeto de extensa pesquisa teórica e empírica nas últimas duas décadas. O presente artigo discute algumas das principais questões relacionadas a testes de raízes unitárias, explora algumas implicações para teoria e política macroeconômica, e apresenta a evidencia recente sobre a existência de raízes unitárias em séries de PIB em países da América Latina. O artigo conclui que não se formou um consenso a respeito de várias das questões envol- vidas nesse debate.

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          Most cited references48

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          The Great Crash, the Oil Price Shock, and the Unit Root Hypothesis

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            Further Evidence on the Great Crash, the Oil-Price Shock, and the Unit-Root Hypothesis

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              Applied Econometric Time Series

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                Author and article information

                Contributors
                Role: ND
                Journal
                neco
                Nova Economia
                Nova econ.
                Nova Economia (Belo Horizonte )
                1980-5381
                December 2005
                : 15
                : 3
                : 145-176
                Affiliations
                [1 ] Universidade Federal de Minas Gerais Brazil
                [2 ] University of Notre Dame USA
                Article
                S0103-63512005000300006
                10.1590/S0103-63512005000300006
                e2fa097a-849a-4767-b102-d31c5ce5c445

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0103-6351&lng=en
                Categories
                ECONOMICS

                General economics
                time-series models,unit roots,business fluctuations,modelos de séries temporais,raízes unitárias,flutuações econômicas

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