Two firms compete on a sales market as well as in hiring labor. The duopolists'sales levels depend on their workforce. There are two each of two typesof workers, mobile and immobile, with differing effort costs. An immobileworker's eort costs are lower when he is employed by the local firm,...

Bereits im Jahre 1980 wählte Horst Albach einen spieltheoretischen und experimentellökonomischenZugang zum Vertrauensproblem in der Ökonomik. Dieser Weg wird erneutbeschritten. Es wird aufgezeigt, dass neuere spieltheoretische und experimentelle Arbeitennicht nur die explanativen Grenzen des...

The common prior assumption justifies private beliefs as posterior probabilities when updatinga common prior based on individual information. Common priors are pervasive in most economicmodels of incomplete information and oligopoly models with asymmetrically informed firms. Wedispose of the...

Collusive agreements are often observed in procurement auctions. They are probablymore easily achieved when competitors’ costs are easily estimated. If, however, the individualcosts of bidders are private information, effective ring formation is difficult to realize.We compare experimentally...

Social institutions regulating group conduct have been regarded as necessaryfor human cooperation to transcend family bonds. However, manystudies in economics and biology indicate that reciprocity based on repeatedinteraction suffices to establish cooperation with non-kin. We shedlight on the...

In our experiment subjects first answer a personality questionnaire. They then take part in a 3-person game. In the game one player chooses between two possibilities. The first is an outside option which assigns a positive amount to that player, but leaves the two others empty-handed. The second...