Assessing the discriminative power of rating systems is an important question to banks and to regulators. In this article we analyze the Cumulative Accuracy Profile (CAP) and the Receiver Operating Characteristic (ROC) which are both commonly used in practice. We give a test-theoretic...

The figures published annually by the IAB concerning the stock of job vacancies across the economy could potentially provide information about the extent of mismatch unemployment that could be of value in terms of labour market diagnosis. This paper explains that the IAB figures on this do not,...

Das Institut für Arbeitsmarkt- und Berufsforschung (IAB) führt seit dem Jahr 1989 einmal jährlich eine repräsentative Erhebung des gesamtwirtschaftlichen Stellenangebots in Unternehmen und öffentlichen Verwaltungen Deutschlands durch. An der jüngsten Befragung im Herbst 2004 beteiligten...

Taking up the discussion surrounding the reliability of the IAB reports on the stock of vacancies in Germany in this journal (ZAF, issue 1/2005), this paper clears up misunderstandings, corrects incorrect statements, and presents further new arguments. The paper is intended to show that it would...

Wir konzentrieren unsere Anmerkungen auf den - nach Scherl - zentralen Punkt der Diskussion, nämlich die Frage, ob die Zahl der angebotenen 'sofort zu besetzenden Stellen' in der IAB-Erhebung korrekt erfasst wird. Des weiteren befassen wir uns mit dem ausgesprochenen Verdacht der...

The analysis of job tasks has become a field of growing scientific activity in recent years. Information on such tasks has been used to analyze various research questions, especially regarding changes in the overall structure of the economy and their implications for persons and firms. Arguably...

This article evaluates the performance of structural equation models in validating measurement models for hypothetical constructs and deals with specific issues following from the way this methodology is typically applied in scale construction. In particular, controlling for various types of...