Final answer:
Resident behaviors in prisoner's dilemma games will differ between the two islands; Altruism is likely to have more cooperation, while Avarice may see more self-interested decisions, resulting in better collective outcomes for Altruism.
Step-by-step explanation:
The prisoner's dilemma is a classic example of game theory that illustrates the potential benefits of cooperation versus pursuing individual self-interest. In the scenario described, residents of Avarice, who are completely self-interested, are more likely to betray one another when playing the prisoner's dilemma, as they prioritize their own benefit over that of the group. On the other hand, residents of Altruism, with a culture of generosity and cooperation, are more likely to cooperate, expecting others to do the same. This behavior aligns with social norms established within their island community. Therefore, you would expect to see a higher degree of cooperative behavior on Altruism than on Avarice, leading to better collective outcomes for residents of Altruism when engaging in prisoner's dilemma games.