This paper presents an automatic control system for welding the root-pass in a seam joining a nozzle perpendicular onto a large diameter pipe. The system is based on the use of a geometry model of the welding seam and on inverse welding process models (i.e. models that map desired weld quality,...

This paper explores methods to study trust. In a variety of settings, answers to survey questions and choices in a trust game are obtained from student sample pools. Some subjects are approached by mail and execute their task at home whereas others participate in classroom experiments. No...

This paper investigates if economic theory can explain variations in piracy behavior between individuals and between countries. It is demonstrated that economic theory explains a notable part of the individual variation in a survey study. Individuals with a low net valuation of an original when...

This paper presents the results from an ethnical discrimination experiment that was conducted in one of Sweden’s most “problematic” cities with respect to the integration process of refugees. The subjects confronted three different bargaining games; one trust game, one social exclusion and...

People may be better at recognizing lies than truths or better at recognizing truths than lies. Such detection biases are analyzed theoretically and experimentally. The detection bias shrinks the equilibrium set to a unique non-pooling equilibrium, in which, the better a player is to detect lies...

We analyze results from two categories of experiments where the subjects received controlled signals about the sex of their co-players. In a series of Battle of the Sexes experiments the subjects played more hawkish against women than against men. The impact of the sex signal was most pronounced...

This paper explores experimentally the effects of costly communication possibilities in market entry games. It is shown that these effects depend on whether entry costs are symmetric or asymmetric. In the former, but not the latter case, communication possibilities increase coordination success...

While many studies have shown that fairness matters few efforts have been made to find out how important fairness is to the individual and thereby assessing the limits of these fairness concerns. This study reports on Trust game experiments in Sweden and Jamaica where subjects could forego a...

This paper investigates trust in situations, where decision-makers are large groups and the decision-mechanism is collective, by developing a game to study trust behavior. Theories from behavioral economics and psychology suggest that trust in such situations may differ from individual trust....

Our main conclusion is that the demand for information services that facilitate statistical screening between profitable and unprofitable sellers is highly sensitive to the market structure. A monopsonist will use information more extensively than would two or more buyers on the same market. We...