We study the empirical behaviour of semi-parametric log-periodogram estimation forlong memory models when the true process exhibits a change in persistence. Simulationresults confirm theoretical arguments which suggest that evidence for long memory islikely to be found...

In ESTAR models it is usually dfficult to determine parameter estimates, as it can be observedin the literature. We show that the phenomena of getting strongly biased estimators is aconsequence of the so-called identication problem, the problem of properly distinguishing thetransition function...

Determining good parameter estimates in ESTAR models is known to be difficult. We showthat the phenomena of getting strongly biased estimators is a consequence of the so-calledidentication problem, the problem of properly distinguishing the transition function in relationto extreme parameter...

This paper analyzes and quantifies the idea of model risk in the environment of internal modelbuilding. We define various types of model risk including estimation risk, model risk in distributionand model risk in functional form. By the quantification of these concepts we analyzethe impact of...

While it is widely agreed that Purchasing Power Parity (PPP) holds as a long-runconcept the specific dynamic driving the process is largely build upon a priori economicbelief rather than a thorough statistical modeling procedure. The two prevailing timeseries models, i.e. the exponential smooth...

This questionnaire survey of fund managers in the United States, Germany and Switzerlanddocuments a distinctly positive influence of bonus payments on investment behavior on bothsides of the Atlantic. Higher bonus payments are significantly related to higher working effortbut not to risk taking....

This paper makes three contributions to our understanding of the price discovery process in currencymarkets. First, it provides evidence that this process cannot be the familiar one based on adverse selectionand customer spreads, since such spreads are inversely related to a trade’s likely...

The use of technical analysis by financial market professionals is not well understood. Thispaper thus analyzes survey evidence from 692 fund managers in five countries, the vast majorityof whom rely on technical analysis. At a forecasting horizon of weeks, technical analysis isthe most...

The G20 summits in 2009 have proposed major changes in governance of the InternationalMonetary Fund (IMF). Most important seems to be the acknowledgment that the IMF in itscurrent form lacks legitimacy and ownership. Accordingly, the G20 suggests a reallocation ofvoting shares to emerging and...

This study validates a survey-based measure of general risk attitude by an incentivecompatible experiment among more than 900 participants in rural Thailand. The surveymeasure of self-assessed risk attitude provides a useful approximation of the experimentallyderived risk attitude. This holds...