Table 1.

Results for phylogenetic generalized least-squares (PGLS) regressions of brain size, body size and diet quality.

	level of analysis	slope	intercept	r2	p-value
logECV versus logBM1	species (n = 37)	0.66	−0.65	0.74	<0.01
	genus (n = 16)	0.75	−0.91	0.94	<0.01
logDQ versus logBM2	species (n = 37)	−0.06	2.47	0.05	0.19
	genus (n = 16)	−0.10	2.62	0.44	<0.01
residual ECV versus residual DQ	species (n = 37)	0.29	0	0.03	0.26
	genus (n = 16)	0.73	0	0.02	0.08