Table 4.

Means and Standard Deviations for Target-to-Masker Ratios (T/Ms) at Coordinate Response Measure (CRM) Identification Threshold (in dB) in the Colocated and Spatially Separated Conditions for the Bilateral Aided, Unilateral Aided, and Unaided Listening Conditions.

		Unaided		Bilateral Aided		Unilateral Aided
Measure	HL Listener Group	Low Reverberation	High Reverberation	Low Reverberation	High Reverberation	Low Reverberation	High Reverberation
T/M at 0°	Younger	4.8 (1.5)	4.9 (2.3)	4.8 (1.7)	4.6 (1.9)	4.5 (1.5)	4.8 (2.3)
	Older	6.4 (2.2)	6.3 (1.8)	5.5 (1.1)	6.5 (1.5)	5.4 (1.2)	6.1 (1.4)
T/M at ±90°	Younger	−0.1 (3.5)	1.9 (4.0)	0.4 (3.3)	1.9 (4.0)	1.3 (3.6)	3.7 (3.5)
	Older	3.5 (4.4)	4.9 (2.3)	3.7 (3.9)	5.9 (3.3)	4.2 (3.5)	6.0 (3.0)
SRM	Younger	4.9 (2.5)	3.0 (2.1)	4.4 (2.3)	2.7 (2.5)	3.2 (2.9)	1.1 (1.7)
	Older	2.9 (2.7)	1.4 (1.9)	1.8 (2.9)	0.6 (2.4)	1.3 (2.8)	0.1 (2.1)

NOTES: HL = hearing loss. SRM = spatial release from masking. SRM in dB is also given (difference in T/M between the spatially separated and colocated conditions calculated on an individual listener basis, then averaged). Data for the unaided condition are from Marrone et al., in press. This condition shows performance without hearing aids, although uniform gain was applied to the loudspeakers to raise the target level to 30 dB SL re: speech identification threshold in quiet.