The Impacts of Two Adaptive Auditory-Cognitive Training Paradigms on Listening to Competing Talkers.

Speech intelligibility among competing talkers becomes more difficult with age, even for older adults with clinically normal hearing. Recently, there has been a growing interest in the implementation of auditory-cognitive training to improve speech-in-noise recognition performance, particularly for older adults. In this study, we implemented two levels of cognitive demand in an adaptive auditory-cognitive training program that used a competing-speaker paradigm. Older adults with normal to near-normal hearing thresholds were assessed on training performance (at the individual and group level), self-reported training strategies, and far-transfer learning in a speech-perception-in-noise task. Training performance analysis revealed that some older adults, particularly those in the more demanding training, performed poorly during the auditory-cognitive training itself. Some participants in this group reported disengagement, potentially due to the low level of those individuals' self-reported satisfaction with engaging in challenging tasks in daily life. Despite these challenges, however, both groups generally improved in the far-transfer learning assessment, though there was variation among participants. Our results suggest that too-high levels of cognitive demand within the auditory-cognitive training may limit some aspects of training outcomes for speech perception in noise; however, higher cognitive demand may be beneficial for those who enjoy challenging tasks.