The model try accompanied using numerical simulator recording feature wavelengths within the for every sandwich-people throughout the years. Just like the a separate replication of one’s abilities, the fresh new design has also been adopted as a single-centered design where somebody as well as their traits try clearly simulated, and therefore provided nearly-identical performance (look for S1 Abilities).
Migration rather than acculturation removes ranging from-category adaptation.
Without acculturation, migration always eliminates between-group variation, just as in Wright’s original island model sugar baby SC and specified by Eq 1. Fig 1 shows time series of FST for low (m = 0.01), typical (m = 0.1) and high (m = 0.3) migration rates. In all cases, the grey a = 0 lines fall to zero. Each trait in each population converges on the mean frequency of that trait across the whole population. Because each sub-population is equally sized, and each trait starts out at unity in one of these s sub-populations, this mean frequency = 1 / s for every trait. This can occur rapidly: for m = 0.01, the perfect between-group structure completely disappears within 300 timesteps, while for m = 0.1 it disappears within 30, and for m = 0.3 within 10.
Time series showing changes in FST over time for (A) a low migration rate m = 0.01, (B) a typical migration rate m = 0.1, and (C) a high migration rate m = 0.3, at varying strengths of acculturation, a. Other parameters: s = 5, n = 5, r = 0.
Conformist acculturation is care for anywhere between-group social variation.
Fig 1 shows that as conformist acculturation increases in strength, between-group cultural variation is maintained (FST > 0) at equilibrium. When migration is low or moderate then complete acculturation (a = 0, red lines) causes FST to remain at 1, indicating the maintenance of complete between-group cultural variation. Читать далее →