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 …

, including a generalized method of moments (GMM) and random coefficient (RC) estimation, are employed on panel data covering the … estimation period 1977:1-2003:4 using three measures of volatility. In contrast to recent studies employing panel data, we do not …

dynamic panel data models. In particular, in our model the long-run relationship between effective exchange rates and domestic …