Abstract:
Stardom as Herding Phenomenon: The first paper of the dissertation outlines the relevance of informational cascades as an explanation for stardom in markets in which consumers have imperfect information regarding the quality of goods. Based on a cascade model, which combines informational and payoff externalities, this paper shows that stardom that has been triggered by cascade behavior is less sensitive to informational shocks than predicted by classic cascade theory. The paper also points out that markets for fine art, due to significant uncertainty with respect to the valuation of art, are particularly prone to cascade- based stardom.
An Empirical Analysis of Stardom in Markets for Fine Art: The second paper empirically investigates whether stardom in markets for fine art is the result of cascade behavior among art consumers. The findings reveal that informational cascades contribute significantly to the formation of star artists and that the talent of an artist is of lower relevance. As the paper shows, these results particularly apply to the market for contemporary fine art. Moreover, the empirical evidence indicates that stardom in fine art markets is also driven by positive payoff externalities.
Cascade Seeding as Stairway to Stardom: The third paper presents an informational cascade model with an influencer who deliberately seeds cascade behavior. The model shows that whether cascade seeding pays off and whether it constitutes an effective access to stardom depends on the length of the decision sequence, on how well individuals are informed and whether the decision, which the influencer wants individuals to make, is favorable or un- favorable. This paper also shows that if two influencers compete for stardom, these influencers engage in an “incentive competition” which leaves both of them empty handed.