Social learning often occurs between groups with different levels of experience. Yet little is known about the ideal behavioral rules in such contexts. Existing insights only apply when individuals learn from each other in the same group. In this paper, we close this gap and consider two groups,...

Individuals belonging to two large populations are repeatedly randomly matched to play a cyclic "times" game such as Matching Pennies. Between matching rounds, individuals sometimes change their strategy after observing a finite sample of other outcomes within their population. Individuals from...

Myopic individuals belonging to an infinite population repeatedly and independently have to choose one of two actions. Between choices each individual is informed about the success of one random other individual. We search among rules with a single round of memory for a rule that attains minimax...