It is well known that the class of strong (Generalized) AutoRegressive Conditional Heteroskedasticity (or GARCH) processes is not closed under contemporaneous aggregation. This paper provides the dynamics followed by the aggregate process when the individual persistence parameters are drawn from...

Since it burst onto the scene of mainstream monetary economics, the New Neo-Classical Phillips Curve has been the focus of two important empirical debates. First, to what extent properly measured marginal costs affect inflation dynamics. Second, to what extent purely forward looking inflation...

The "New Keynesian" Phillips Curve (NKPC) states that inflation has a purely forward-looking dynamics. In this paper, we test whether European and US inflation dynamics can be described by this model. For this purpose, we estimate hybrid Phillips curves, which include both backward and...

We evaluate how departure from normality may affect the conditional allocation of wealth. The expected utility function is approximated by a forth-order Taylor expansion that allows for non-normal returns. Market returns are characterized by a joint model that captures the time dependency and...

Many macroeconomic models involve hybrid equations, in which some variables are a function of both their lags and their expected future value. The hybrid ``New Keynesian'' Phillips Curve is a prominent example. Estimates of such hybrid models have produced conflicting empirical results: Studies...

In this paper, we investigate the sources of heterogeneity within the euro area. For this purpose, we build an optimization-based multi-country model (MCM) that allows different sources of heterogeneity across countries, both in terms of behavior of economic agents and in terms of asymmetry of...