Table 2.

Mean relative IOI DLs and SEs for each listener group for single reference target IOIs of 25 and 100 ms in the two-tone and six-tone sequences. Values in parentheses are corresponding mean absolute DLs.

	25 ms IOI-ms		100 ms IOI
	Two-tone	Six-tone	Two-tone	Six-tone
Yng Norm
Mean	0.21 (5.3)	0.15 (3.7)	0.15 (15.0)	0.16 (16.0)
SE	0.02	0.01	0.01	0.01
Older Norm
Mean	0.45 (11.3)	0.35 (8.8)	0.30 (30.0)	0.29 (29.0)
SE	0.07	0.03	0.03	0.02
Older Hrg Imp
Mean	0.44 (11.0)	0.32 (8.0)	0.28 (28.0)	0.27 (27.0)
SE	0.06	0.02	0.02	0.03