@techreport{Andres2024, type = {Working Paper}, author = {Andres, Maximilian}, title = {Equilibrium selection in infinitely repeated games with communication}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {75}, issn = {2628-653X}, doi = {10.25932/publishup-63180}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-631800}, pages = {38}, year = {2024}, abstract = {The present paper proposes a novel approach for equilibrium selection in the infinitely repeated prisoner's dilemma where players can communicate before choosing their strategies. This approach yields a critical discount factor that makes different predictions for cooperation than the usually considered sub-game perfect or risk dominance critical discount factors. In laboratory experiments, we find that our factor is useful for predicting cooperation. For payoff changes where the usually considered factors and our factor make different predictions, the observed cooperation is consistent with the predictions based on our factor.}, language = {en} } @techreport{Spaeth2021, type = {Working Paper}, author = {Sp{\"a}th, Maximilian}, title = {It's me again… Ask Avoidance and the Dynamics of Charitable Giving}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {38}, issn = {2628-653X}, doi = {10.25932/publishup-52099}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-520991}, pages = {25}, year = {2021}, abstract = {Charities typically ask potential donors repeatedly for a donation. These repeated requests might trigger avoidance behavior. Considering that, this paper analyzes the impact of offering an ask avoidance option on charitable giving. In a proposed utility framework, the avoidance option decreases the social pressure to donate. At the same time, it induces feelings of gratitude toward the fundraiser, which may lead to a reciprocal increase in donations. The results of a lab experiment designed to disentangle the two channels show no negative impact of the option to avoid repeated asking on donations. Instead, the full model indicates a positive impact of the reciprocity channel. This finding suggests that it might be beneficial for charities to introduce an ask avoidance option during high-frequency fundraising campaigns.}, language = {en} }