Hearing benefit ratings are inflated for second-presented sentences due to an order effect
Evidence
Ratings increase near linearly as a function of ΔSNR, and are asymmetric: when the + ΔSNR interval preceded the reference, ratings were less than when the + ΔSNR interval followed the reference (e.g., when the second interval was the better SNR, ratings were greater than one increment at a ΔSNR of 4 dB, but when the second interval was the worse SNR, ratings were greater than one increment only when ΔSNR was 8 dB). This asymmetry was most likely due to an order effect; the second iteration of a sentence has been shown to be more intelligible (e.g., Thwing 1956 ), hence second-interval deficits would be deflated, and second-interval benefits inflated. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5686
Categorization
Category: Causal Relationships
- XREF: Connects to classic order effects in psychophysical testing and repeated-sentence intelligibility research.
Related
- Repeated sentence presentations inflate perceived benefit and deflate perceived deficit (similarity 0.91)
- A repeated sentence is more intelligible on second hearing (similarity 0.90)
- Listener ratings of speech benefit only become significant once SNR change reaches 4 dB (similarity 0.86)
- Listeners only rate a speech-quality change as meaningful when it exceeds detectability thresholds (similarity 0.80)
- Listeners value loudness increases as much as SNR improvements they provide (similarity 0.79)