Table 1.

Baseline parameter settings, chosen to match the original model [20] and previous work on consensus formation [34].

parameter	value
cost of cooperating, C	0.1
base growth rate, ra	2
base carrying capacity, Ka	20
threshold variance in opinions to reach consensus, xthr	0.03
number of listeners during a discussion event, Nl	30
difference in influence exponent, λ	4
consensus time cost scalar, I	0.01
per capita effect of asocial individuals upon socials, ηsa	0.05
per capita effect of social individual upon asocials, ηas	0.05
maximum increase in carrying capacity owing to cooperation, β	300
mutation rate on τ, ${\mu }_{\tau }$	0.01
mutation rate on p, μp	0.02
mutation rate on α, ${\mu }_{\alpha }$	0.01
variance of normal distribution used for mutations on p and α, σ	0.1
number of patches, Np	50
benefit of cooperation, B	0.9
gradient of increase in carrying capacity, γ	0.0075
migration rate, m	0.1