Morality Games 309 The effectiveness of subconscious cues of observability points to a primary role for reputations in our learned or evolved proclivities toward pro-social behavior. The large impact of subtle cues of observability, however, calls into question alternative explanations not based on reputations. Explicit Requests. When we are asked directly for donations, we give more than if we are not asked, even though no new information is conveyed by the request. In a study of supermarket shoppers around Christmas time, researchers found that pass- ersby were more likely to give to the Salvation Army if volunteers not only rang their bell but explicitly asked for a donation (Andreoni, Rao, & Trachtman, 2011). If our motive is to actually do good, or perhaps proximally to feel good by the act of giving, we should not be impacted by an explicit request. However, if we evolved or learned to give in order to gain rewards or avoid pun- ishment as described above, then we ought to be more likely to give when, if we did not give, it would be common knowledge that we had the option to give and chose not to. The explicit request makes the denial common knowledge. It is worth emphasizing that our evolved intuition to respond to explicit asks may be (mis)applied to individual settings that lack social rewards. Imagine you are approached by a Salvation Army volunteer in front of a store in a city where you are visiting for one day only. A literal reading of the model would suggest that you should be no more likely to respond to an explicit request. But it is more realistic to expect that if your pro-social preferences were learned or evolved in repeated inter- actions then applied to this new setting, you would respond in a way that is not optimal for this particular setting and nonetheless give more when explicitly asked Gust as our preferences for sweet and fatty foods, which evolved in an environment where food was scarce, lead us to overeat now that food is abundant