Small detection-threshold gains amplify into much larger identification-level changes

Evidence

That being said, a small improvement in detection threshold can be amplified at higher levels in the auditory system, particularly when we consider Erber’s (1982) four different levels of perception. A small difference in detection threshold can manifest into a large change in performance at the identification level. For example, a change of 1 dB in the speech recognition threshold can be associated with a change of 15 to 20 percentage points on a speech identification task (Duquesnoy, 1983). — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1430

Categorization

• XREF: Connects to Erber’s four levels of perception, a hierarchy useful for audiology clinical practice in this book. — connects to: Identification might operate at a different level than researchers measured. — John Drury and Rupert Brown and Roberto González and Daniel Miranda, Emergent social identity and observing…, 120
• QUESTION: Worth confirming the mechanism by which the four perception levels amplify a 1 dB threshold change into 15-20 percentage points.