Table 2.

Attributes or Features for Each of 165 Research Articles Reviewed (145 laboratory studies and 20 test battery studies)

Study (complete citation) Procedure/stimuli Number and types of groups (e.g., 3, young normal hearing, old normal hearing, old hearing impaired) Subject ages—separate entry for each group listed Hearing status—separate entry for each group listed Cognitive status—separate entry for each group listed Sample source (e.g., university community, nursing home, convenience sample, random sample) Audibility controls included? (e.g., yes, matched audiograms; yes, used high SPL that ensured audibility through 4000 Hz; no, no controls noted) Research design Number (and listing) of central auditory measures examined Types of statistical analyses used Significant effects observed? (e.g., yes, negative effect of age for 1 condition, but no, for other 4 conditions; yes, significant negative correlation with hearing loss)