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Agent-Based Models of Strategies for the Emergence and Evolution of Grammatical Agreement

Figure 10

Effect of population change for reuse strategy.

i) 50 game series for 5000 games (1000 per agents). Average values are shown with standard deviation. We see clearly that despite population turnover (increasing ), the marker system is transmitted in a stable way once it has emerged. Variation and the size of the marker inventory stay at the same level. Efficiency is higher compared to a reuse strategy without population turn over (Figure 9) because in a changing population, markers that were invented early on do not survive. ii) Evolution of marker preferences for a single experiment. The marker preferences are averages for all agents. Coherence dips every time a new agent enters before recovering.

Figure 10