The first aim of this paper is to clarify the differences and rela-tionships between cumulative advantage/disadvantage and the Matthew ef-fect. Its second aim, which is also its main contribution, is not only to present a new measure of the Matthew effect, but also to show how to esti-mate this...

The aim of this paper is to demonstrate how the change in actual and potential market risks in the Dow Jones Industrial Average (DJIA) during the two-year period 2007-2008 can be analyzed with the help of-analysis. In the empirical analysis, the average of the Lyapunov exponents for the dynamic...

We show that a so-called expectations-based optimal monetary policy rule has desirable properties in a standard New Keynesian model augmented with a cost channel and inflation rate expectations that are partly backward-looking. In particular, optimal monetary policy under commitment is...

We show that the Matthew effect, or Matthew mechanism, was present in the artificial cultural market Music Lab when social influence between individuals was allowed, whereas this was not the case when social influence was not allowed. We also sketch on a class of social network models, derived...