Suchergebnisse

AbstractA price reveal auction (PRA) is a descending price auction in which the current price of the item on sale is hidden. Buyers can privately observe the price only by paying a fee, and every time an agent does so, the price falls by a predetermined amount. We show that if the number of participants,

Abstract
We present a natural environment that sustains full co-operation in one-shot social dilemmas among a finite number of self-interested agents. Players sequentially decide whether to contribute to a public good. They do not know their position in the sequence, but observe the actions of some predecessors. Since agents realise that their own action may be observed, they have an incentive to contribute in order to induce potential successors to also do so. Full contribution can then emerge in equilibrium. The same environment leads to full co-operation in the prisoners' dilemma.

We investigate the effect of social media endorsements (likes, retweets, shares) on individuals' policy preferences. In two pre-registered online experiments ( N = 1,384), we exposed participants to non-neutral policy messages about the COVID-19 pandemic (emphasizing either public health or economic activity as a policy priority) while varying the level of endorsements of these messages. Our experimental treatment did not result in aggregate changes to policy views. However, our analysis indicates that active social media users did respond to the variation in engagement metrics. In particular, we find a strong positive treatment effect concentrated on a minority of individuals who correctly answered a factual manipulation check regarding the endorsements. Our results suggest that though only a fraction of individuals appear to pay conscious attention to endorsement metrics, they may be influenced by these social cues.

We investigate the effect of social media endorsements (likes, retweets, shares) on individuals' policy preferences. In two online controlled experiments (N=1,384), we exposed participants to non-neutral policy messages about the COVID-19 pandemic (emphasizing either public health or economic activity as a policy priority) while varying the level of endorsements of these messages. Our experimental treatment significantly shifted the policy views of active social media users by about 0.12 standard deviations. The treatment effect for these users is heterogeneous depending on their pre-existing views. Specifically, message endorsements reinforce pre-existing attitudes, thereby increasing opinion polarization. The effect appears concentrated on a minority of individuals who correctly answered a factual manipulation check regarding the endorsement metrics. This evidence suggests that though only a fraction of individuals pay conscious attention to these metrics, they may be easily influenced by these social cues.

We investigate the effect of social media endorsements (likes, retweets, shares) on individuals' policy preferences. In two online controlled experiments (N=1,384), we exposed participants to non-neutral policy messages about the COVID-19 pandemic (emphasizing either public health or economic activity as a policy priority) while varying the level of endorsements of these messages. Our experimental treatment significantly shifted the policy views of active social media users by about 0.12 standard deviations. The treatment effect for these users is heterogeneous depending on their pre-existing views. Specifically, message endorsements reinforce pre-existing attitudes, thereby increasing opinion polarization. The effect appears concentrated on a minority of individuals who correctly answered a factual manipulation check regarding the endorsement metrics. This evidence suggests that though only a fraction of individuals pay conscious attention to these metrics, they may be easily influenced by these social cues.