We present new evidence on the uncertain nature of nonstationarity – that is, trend stationarity vs. difference stationarity – of aggregate per capita real output, by submitting to a composite testing procedure a 20-country sample over an historically relevant time span. We find that the...

This paper investigates the dynamics in a stock market where investors have heterogeneous beliefs about future prices of a risky asset, due both to information asymmetries on the "fundamentals", and to an investor specific vector of parameters that defines the strategy adopted to generate a...

The large decline in output volatility experienced by most industrialized countries in the last decades has been thoroughly analyzed using standard time and frequency domain methods. In this paper we investigate the issue of moderation of volatility in G-7 economies and its sources, applying a...

In this paper we suggest a scaling approach to business cycles. We develop a heterogeneous interacting agents (HIAs) model that replicates well known industrial dynamics stylized facts, as the power law distribution of firms' size and the Laplace distribution of firms' growth rates. In...

Based on the prices of McDonald's Big Mac hamburger in 11 Eurozone countries over the 1986–2009 period, the present article investigates whether the adoption of the euro was accompanied by an increase in inflation and how far it affected developments in price dispersion. Our results...

We show that an economic system populated by multiple agents generates an equilibrium distribution in the form of multiple scaling laws of conditional PDFs, which are sufficient for characterizing the probability distribution. The existence of the double scaling law is demonstrated empirically...

We model a network economy with three sectors: downstream firms, upstream firms, and banks. Agents are linked by productive and credit relationships so that the behavior of one agent influences the behavior of the others through network connections. Credit interlinkages among agents are a source...