Inflation, growth and real and nominal uncertainty: some bivariate Garch-in-Mean evidence for Brazil

Abstract

In this paper I intend to estimate a bivariate GARCH-in-Mean in order to test four hypotheses about Brazilian economy. First, I want to know whether inflation uncertainty has a positive impact on the level of inflation as predicted by Cukierman and Meltzer (1986). Second, I want to test if this uncertainty has a negative impact on growth as proposed by Friedman (1977). Third, it will be tested the hypothesis of a negative impact of uncertainty growth on the level of growth as pointed out by Ramey and Ramey (1991). Finally, I will test if this uncertainty has a positive impact on the level of inflation as predicted by Deveraux (1989). The findings are a little mixed but in all settings they corroborate Cukierman and Meltzer explanation and some of them corroborate Friedman's theory.<br>O objetivo deste artigo e estimar um GARCH-in-Mean bivariado para testar quatro hipóteses sobre a economia brasileira. Primeiro, quero testar se a incerteza inflacionaria tem um impacto positivo no nível de inflacão como previsto por Cukierman and Meltzer (1986). Segundo, testo se esta incerteza tem um impacto negativo no crescimento como proposto por Friedman (1977). Terceiro, será testada a hipótese de um impacto negativo da incerteza no crescimento sobre o nível de crescimento como apontado por Ramey and Ramey (1991). Finalmente, testarei se esta incerteza tem um impacto positivo no nível de inflação como previsto por Deveraux (1989). Os resultados são variados, mas em todos os modelos estimados corrobora-se a hipótese de Cukierman e Meltzer e em alguns se corrobora a hipótese de Friedman

Assessing the effect of inflation uncertainty on inflation: further evidences for Latin America

“…Moreover, as for the inflation-targeting (IT) countries, the implementation of the latter monetary framework seems to have contributed to the decrease in inflation volatility persistence (Broto, 2008). Other Latin American country-specific studies are in line with these findings (Della Mea and Pena, 1995;Baillie et al, 1996;Ma, 1998;Vale, 2005;Grier and Grier, 2006;Castilho et al, 2007;Thornton, 2008).…”