This paper contains a set of tests for nonlinearities in economic time series. The tests correspond both to standard diagnostic tests and some new developments in testing nonlinearities. The latter test procedures make use of models in chaos theory, so-called long memory models and some...

This paper contains a set of tests for nonlinearities in economic time series.The tests correspond both to standard diagnostic tests and some new developments in testing nonlinearities.The latter test procedures make use of models in chaos theory, so-called long-memory models and some asymmetric...

This paper contains a set of tests for nonlinearities in economic time series.The tests correspond both to standard diagnostic tests for revealing nonlinearities and some new developments in modelling nonlinearities.The latter test procedures make use of models in chaos theory, so-called...

This paper deals with Finnish bankruptcies.It shows that bankruptcies are strongly related to the business cycle and that they are perhaps even more strongly related to indebtedness, real interest rates and asset prices.The importance of these financial factors probably increased when the...

This paper deals with optimal payment systems. The issue boils down to how large are the costs of different payment media, which can be interpreted as a question of the efficiency of the means of payment. However, there are other qualifications related to the choice of payment media. Here, at...

This paper contains a set of tests for nonlinearities in economic time series. The tests comprise both standard diagnostic tests for revealing nonlinearities and some new developments in modelling nonlinearities. The latter test procedures make use of models in chaos, theory, so-called...