Are Experienced Hearing Aid Users Faster at Grasping the Meaning of a Sentence Than Inexperienced Users? An Eye-Tracking Study.
Julia Habicht, Birger Kollmeier, Tobias Neher
PMID 27595793WHAT IT FOUND
Experienced hearing aid users took less time to identify the picture matching a spoken sentence than inexperienced users.
Button-press time did not show this. The study does not prove hearing aids cause faster comprehension.
Key findings
01Experienced hearing aid users had shorter processing times than inexperienced users.
02Offline button-press reaction times did not show significant differences for linguistic complexity, hearing aid condition, or listener group.
03The hearing aid conditions did not produce a consistent processing-time effect; the only significant condition difference was between the first and second NAL-R measurements, which the authors describe as a training effect.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The study compared people who already used hearing aids with people who did not. It did not randomly assign hearing aid use, so it cannot show that hearing aids caused the faster processing times. The authors say it is unclear whether the group difference is due to hearing aid use or other factors. The analysis relied on a small sample. One participant was excluded before analysis, and six extreme processing-time measurements were removed, leaving 24 complete datasets. The confirmatory analysis combined repeated measurements and changed the dataset size, so the main group effect rests on a lab task rather than a clinical trial. The outcome was eye fixation on pictures in a soundproof booth, not everyday conversation or functional communication. Basic speech recognition was similar across groups and settings, so the finding does not show that one hearing aid setting is better for comprehension.
Declared interests
The supplied text does not report authors' conflicts of interest or external funding. It states that participants were paid on an hourly basis.
The easy way to misread this
Do not conclude that hearing aids make clients understand sentences faster. The study compared people who already used hearing aids with people who did not, and the authors state that it remains unclear whether the difference is due to hearing aid use or other factors.