Georg Weizsäcker

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In many field settings, participants sort among environments based on their preferences, beliefs, and skills. Experiments, however, often ignore the potential impact of such sorting. We demonstrate the importance of sorting for experiments, in the domain of social preferences. When individuals are constrained to play a dictator game, 61% of the subjects(More)
We examine the robustness of information cascades in laboratory experiments. Apart from the situation in which each player can obtain a signal for free (as in the experiment by Anderson and Holt, 1997, American Economic Review), the case of costly signals is studied where players decide whether to obtain private information or not, at a small but positive(More)
Two behavioral models of two-person normal-form game play are presented and estimated, using three experimental data sets. The models are variants of the Quantal Response Equilibrium model de...ned by McKelvey and Palfrey (1995, Games and Economic Behavior), but allow a player to hold inaccurate beliefs about the behavior of her opponent. Each model(More)
The G8 is considering committing to purchase vaccines against diseases concentrated in low-income countries (if and when desirable vaccines are developed) as a way to spur research and development on vaccines for these diseases. Under such an 'advance market commitment,' one or more sponsors would commit to a minimum price to be paid per person immunized(More)
In many economic contexts, an elusive variable of interest is the agent’s belief about relevant events, e.g. about other agents’ behavior. A growing number of surveys and experiments ask participants to state beliefs explicitly but little is known about the causal relation between beliefs and other behavioral variables. This paper discusses the possibility(More)
We present evidence from a natural field experiment designed to shed light on the efficacy of alternative fundraising schemes. In conjunction with the Bavarian State Opera House, we mailed 25,000 regular opera attendees a letter describing a charitable fundraising project organized by the opera house. Recipients were randomly assigned to one of six(More)
We investigate violations of consequentialism in the form of the stochastic dominance property. The property is shared by many theories of choice and implies that the decision-maker prefers receiving the best outcome for sure over all lotteries that involve multiple outcomes. We run experiments to demonstrate that dominated randomization can be attractive.(More)