Table 1.

Comparing model support with the Bayes factor. (Bayes factors were calculated as follows: BF=2(ln LhA−ln LhB), where ln Lhx is the marginal likelihood (i.e. the harmonic mean of the post-convergence ln likelihoods, allowing us to compare the posterior distributions). BF values indicate evidence in favour of model A: 0–2, barely worth mentioning; 2–6, positive; 6–10, strong; above 10, very strong/decisive (Kass & Raftery 1995). Negative values favour model B. m, matrilocal; p, patrilocal.)

model A	ln Lh	model B	ln Lh	BF	verbal description
PAN-m	−61.36	PAN-p	−62.49	2.26	positive evidence for matrilocality
PMP-m	−60.80	PMP-p	−64.99	8.38	strong evidence for matrilocality
POC-m	−62.79	POC-p	−61.50	−2.58	positive evidence for patrilocality
equal rates	−63.12	default	−59.61	−7.03	strong evidence for unequal rates of character change