Grouping promotes both partnership and rivalry with long memory in direct reciprocity
Fig 5
Time series for the well-mixed populations.
Typical time series of the fractions of the non-FR efficient, non-FR rival, and FR strategies in the well-mixed populations. The top and bottom panels show the results for and
, respectively. The population size is N = 64, and the other simulation parameters are the same as in Fig 4. For the sake of better visualization, each time series plots every thousandth data point.