In this article, we consider the robustness to fat tails of four stationarity tests. We also consider their sensitivity to the number of lags used in long-run variance estimation, and the power of the tests. Lo's modified rescaled range (MR/S) test is not very robust. Choi's Lagrange multiplier...

In this study, we analyse compliance for a large sample of European companies mandatorily applying International Financial Reporting Standards (IFRS). Focusing on disclosures required by IFRS 3 <italic>Business Combinations</italic> and International Accounting Standard 36 <italic>Impairment of Assets</italic>, we find...

We consider stochastic frontier models in a panel data setting where there is dependence over time. Current methods of modeling time dependence in this setting are either unduly restrictive or computationally infeasible. Some impose restrictive assumptions on the nature of dependence such as the...

Unlike variable-centered measures, validity and stability of typologies have been rarely studied. Magun, Rudnev and Schmidt [in review] developed a value typology of the European population using data from the 4th round of the European Social Survey. The value classes showed heuristic power in...

This study examines the relationship between values, efficacy, trust and innovative organizational behaviour in Russia. We analyse the direct and indirect effect of gender, age and education on innovative behaviour via values, trust and efficacy. For the measurement of values we employed a new...

A major application of rescaled adjusted range analysis (RS analysis) is the study of price fluctuations in financial markets. There, the value of the Hurst constant, H, in a time series may be interpreted as an indicator of the irregularity of the price of a commodity, currency or similar...

The analysis of volatility in financial markets has become a first rank issue in modern financial theory and practice: Whether in risk management, portfolio hedging, or option pricing, we need to have a precise notion of the market's expectation of volatility. Much research has been done on the...

Based on daily VDAX data this paper analyzes the factors governing the movements of implied volatilities of options on the German stock index DAX. Using Principal Components Analysis over the sample period from 1996 to 1997, we derive common factors representing shift and curvature of the term...