growth in 15 Sub-Saharan African (SSA) countries using panel unit root and cointegration tests over the period 1980 to 2004 …

This paper argues that typical applications of panel unit root tests should take possible nonstationarity in the … volatility process of the innovations of the panel time series into account. Nonstationarity volatility arises for instance when … enjoyed by many industrialized countries, known as the "Great Moderation". It also proposes a new testing approach for panel …

This paper argues that typical applications of panel unit root tests should take possible nonstationarity in the … volatility process of the innovations of the panel time series into account. Nonstationarity volatility arises for instance when … enjoyed by many industrialized countries, known as the `Great Moderation.' It also proposes a new testing approach for panel …

This paper builds up a simple New Keynesian model and revisits the relationship between unemployment and in ation in … beyond the tradeoff between the first moments of unemployment and infl ation provided by the short-run Phillips curve. Higher … volatility in ifln ation raises unemployment at low-frequency. Increased volatility in infl ation makes nominal wages more …

4 provides the power envelope for tests of the unit root hypothesis in Gaussian panel data models with cross …