Table 4.

Results of t-tests between the <s>∕<sh> tokens and the <neither> tokens for the two listener groups in the three acoustic dimensions. Significant p-values at the level of 0.05 are in bold.

Acoustic parameters	Listener groups	Comparison groups	t	DOF	p value
M1	English-speaking listeners	<s>vs <neither>	7.8864	273	<0.001
		<sh>vs <neither>	−7.946	265	<0.001
	Japanese-speaking listeners	<s>vs <neither>	7.0887	299	<0.001
		<sh>vs <neither>	−4.2029	291	<0.001
M2	English-speaking listeners	<s>vs <neither>	−3.5687	273	<0.001
		<sh>vs <neither>	−7.1382	265	<0.001
	Japanese-speaking listeners	<s>vs <neither>	−2.4075	299	0.02
		<sh>vs <neither>	−6.7182	291	<0.001
Onset F2	English-speaking listeners	<s>vs <neither>	−6.8466	273	<0.001
		<sh>vs <neither>	−0.2205	265	0.08
	Japanese-speaking listeners	<s>vs <neither>	−10.228	299	<0.001
		<sh>vs <neither>	−1.7224	291	0.08