Equating individual differences for auditory input.
D000293:Adolescent; D000328:Adult; D001307:Auditory Perception; D001309:Auditory Threshold; D003214:Conditioning, Classical; D005260:Female; D006801:Humans; D008297:Male; D009949:Orientation; D010551:Personality; D013216:Reflex, Startle; D013016:Sound