Table 6.

Summary of Findings from Review of 4 of 18 Test Battery Studies (20 articles) Making Use of Nonspeech Measures of Central Auditory Processing

Test battery study # (from Table 4)	Nonspeech measures included in study	Reported age effects?	Reported hearing loss effects?	Reported cognitive effects?	Reported age effect with control for hearing loss?
7	Duration and frequency tone patterns	Yes	No	NA	Yes
8	Auditory filter width at 1000 Hz, broadband noise gap detection, interaural time difference (ITD) discrimination for clicks centered at 500 and 2000 Hz	Yes	Yes	NA	Yes
11	Temporal order for midfrequency pure tones, 1000 Hz pure-tone duration discrimination	Yes	No	Yes	Yes
14	Pitch Pattern Sequence (PPS) Test and Random Gap Detection Test (RGDT); RGDT data later excluded	Yes	No	No	Yes
	Summary: # “Yes”/# of studies examining effect	4/4	1/4	1/2	4/4