We show that tests for a break in the persistence of a time series in the classicalI(0) - I(1) framework have serious size distortions when the actual data generatingprocess exhibits long-range dependencies. We prove that the limiting distributionof a CUSUM of squares based test depends on the...

We develop a Wald type test to distinguish between long memory and ESTARnonlinearity by using a directed-Wald statistic to overcome the problem of restricted parametersunder the alternative. The test is derived from two basic model specificationswhere the first is the standard model based on an...

We show that the power of the KPSS-test against inte-gration, as measured by divergence rates of the test statistic underthe alternative, remains the same when residuals from an OLS-regression rather than true observations are used.[...]

Als Teil des operationellen Risikos stellt das Modellrisiko eine wichtige Komponente f¨urdie Risikoermittlung bei Finanzinstitutionen dar. Da letztere z.B. bei der Tarifierung undBepreisung von Derivaten bzw. Portfolien oder bei der Markt- und Kreditrisikoberechnungauf stochastische Modelle...

This paper provides evidence on the hypothesis that many behavioral finance patterns are sodeeply rooted in human behavior that they are difficult to overcome by learning. We test thison a target group which has undoubtedly very strong incentives to learn efficient behavior,i.e. fund managers....

There are robust gender differences in the domains of risk taking, overconfidence and competitionbehavior. However, as expertise tends to level these differences, we ask whether financialexperts still show gender dissimilarities in their domains of decision making? We analyzesurvey responses of...

This study examines profits and speculation in the USD/EUR trading of a bank in Germanyover a four-month period. Dealing activity at the bank generates profits but speculation doesnot seem to contribute to this. We find that speculative positions fail to become profitablewithin a 30-minutes'...

Evidence from credit files is provided to examine bank lending determinants of Thaicommercial banks. Their lending practice follows reasonable patterns as a standardset of variables, including indirect risk variables, explains much of the variance in interestrate spread. Reflecting institutional...

Early warning systems (EWSs) are subject to restrictions that apply to exchangerates in general: fundamentals matter but their influence is small and unstable. Despitethis limitation four major lessons emerge: First, EWSs have robust forecastingpower and thus help policy-makers to prevent...

Our questionnaire survey finds that most fund managers rely on the strategies ofbuy-&-hold, momentum and contrarian trading. These strategies are typically appliedmutually. Their use is rooted in the attributes and beliefs of the respective fund managers:buy-&-hold traders behave fundamentally...