Table 1.

Summary of descriptive statistics and independent-samples t test (df = 82) comparing the mean peak modulation rate of each stimulus type's acoustic envelopes

	M	SD	t	p
Slow (−30%) presentation rate
Sentences	0.98	0.59
Melodies	0.86	0.60
Scrambled sentences	1.52	0.32
Sentences versus scrambled sentences			11.6	<0.00001
Sentences versus melodies			3.35	0.0012
Normal rate
Sentences	1.26	0.78
Melodies	1.20	0.82
Scrambled sentences	2.13	0.42
Sentences versus scrambled sentences			14.1	<0.00001
Sentences versus melodies			0.34	0.73
Fast (+30% normal) rate
Sentences	1.60	0.90
Melodies	1.60	1.05
Scrambled sentences	2.79	0.52
Sentences versus scrambled sentences			12.1	<0.00001
Sentences versus melodies			0.01	0.99