During the last two decades, there have been many reports about the success and failure of investments in ICT and information systems. Failures in particular have drawn a lot of attention. The outcome of the implementation of information and communication systems has often been disastrous....

This paper proposes a model for a certification market with an imperfect testing technology. Such a technology only assures that whenever two products are tested the higher quality product is more likely to pass than the lower quality one. When only one certifier with such testing technology is...

Märkte für energieeffiziente Güter zeichnen sich typischerweise durch Informationsasymmetrien aus. Zertifizierte Öko-Labels einer unabhängigen Drittpartei stellen ein geeignetes Instrument dar, um solche Informationsasymmetrien am Markt zu überwinden und Vertrauen in die Gültigkeit von...

We consider a market where privately informed sellers resort to certification to overcome adverse selection. There is uncertainty about the certifier's ability to generate accurate information. The profit of a monopolistic certifier is an inverted U-shaped function of his reputation for...