Figure 3.

(a) Group search efficiency η (N_A = 50) as a function of social selectivity parameter (α) for different Lévy exponents (μ), resource density (N_R) and resource distribution (β). Error bars indicate 95% confidence intervals. (b) Effect of group size and individual search strategy on the advantage of minimally selective social learning strategy (α = 10⁻⁵) relative to selective social learning (α = 10⁻²) for β = 3. Dashed line indicates when the advantage of selective and minimally selective social learning are equivalent.