Meaningful hearing benefit emerges at 4 dB SNR regardless of presentation order

Evidence

Regarding the JMD, the ratings significantly increased only at 4 dB, regardless of order, lending support to the notion of detectability being a requisite for meaningfulness. SNR JNDs for these participants, however, were not well correlated with their individual mean responses at any ΔSNR. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5686

Categorization

• QUESTION: Why would individual JNDs fail to correlate with meaningfulness ratings if detectability is requisite? The dissociation deserves closer scrutiny.