alliances and afflilative
behaviour responses to group
aggression
competition is the driving force
sociality evolved as it
increases indiv and group
fitness
co-op favoured to mitigate conflicts of interest
co-op with kin and useful allies
females = food males = mating
co-op through pursuit of self interest, eventually
benefits both parties
Silk et al 2004
Savannah baboons supported close maternal kin during
conflicts, no evidence to show non kin support and they
helped HR more even if they out ranked both fighters
no stable alliance with non relatives
HR more active in support because
costs for them is smaller than for LR
relatives but they also gaon more benefits
Primates have larger brains
to manage and manip social
information
brain size correlates with measures of
sociality and group size in other
taxonomic groups