Table 2.

Perceptual distance, in d^′ units, fro all pairs of stimuli for both groups on pretest and post-test.

Pair	VOT-trained				F0-trained
	Pretest		Post-test		Pretest		Post-test
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
AB	1.59	0.45	2.83	1.65	1.06	0.55	2.20	0.75
CD	2.28	0.84	3.77	1.59	1.49	0.79	2.87	1.81
AC	1.54	0.90	2.88	1.20	1.32	0.70	3.68	1.91
BD	1.48	0.42	2.55	1.15	1.25	0.43	2.56	0.75
AD	2.86	1.59	4.32	1.65	1.74	0.89	4.37	0.82
BC	3.32	1.73	4.52	1.00	2.49	1.26	3.98	1.29