Table 3.

Contrasts between the effect of different acoustic manipulations on the weight of emotion categories for each call type: median of posterior distribution (%) and 95% CI

Model	Contrast	Gasps			Laughs
		hurt	surprised	pleased	evil	polite	amused
Without SC	R+ vs. R−	13.4	−3.5	−9.9	0.7	−5.1	4.4
		[9.1, 17.7]	[−9.7, 2.7]	[−14.4, −5.5]	[−4.0, 5.6]	[−8.5, −1.7]	[1.1, 7.9]
With SC	R+ vs. R−	13.7	−3.7	−9.9	−8.1	3.4	4.6
		[9.4, 17.9]	[−9.9, 2.4]	[−14.3, −5.5]	[−14.1, −1.2]	[−2.0, 8.5]	[−0.8, 9.8]
	SC1	13.9	−11.6	−2.0	26.7	−25.4	−1.0
		[1.4, 25.5]	[−29.6, 6.3]	[−15.5, 11.0]	[10.3, 39.0]	[−37.5, −12.8]	[−13.0, 12.0]

Model	Contrast	Moans			Screams
		hurt	effortful	pleased	afraid	aggressive	pleased
Without SC	R+ vs. R−	12.8	−0.3	−12.5	5.1	2.4	−7.6
		[9.5, 16.1]	[−3.6, 3.0]	[−17.2, −7.8]	[2.4, 7.9]	[−0.3, 5.1]	[−11.4, −3.7]
With SC	R+ vs. R−	12.7	0.4	−13.1	−3.6	1.9	1.7
		[8.3, 17.3]	[−4.0, 4.8]	[−19.2, −7.0]	[−10.0, 2.9]	[−3.1, 7.3]	[−6.8, 9.9]
	SC	0.6	−3.5	2.8	4.6	0.3	−4.9
		[−13.8, 14.9]	[−17.8, 10.8]	[−17.1, 22.4]	[1.5, 7.6]	[−2.2, 2.5]	[−8.6, −1.0]

SC, spectral centroid; R–, weaker harmonics; R+, stronger harmonics. Cells in bold contain 95% CIs that exclude or nearly exclude zero. This is merely a visualization aid, not significance testing.

¹Effect over the observed range of 530–4,260 Hz, controlling for rolloff manipulation.