轻度听力损失对儿童在安静和嘈杂环境中同时处理多项任务能力的影响。
Effect of minimal hearing loss on children's ability to multitask in quiet and in noise.
作者信息
McFadden Brittany, Pittman Andrea
机构信息
Arizona State University, Tempe, AZ, USA.
出版信息
Lang Speech Hear Serv Sch. 2008 Jul;39(3):342-51. doi: 10.1044/0161-1461(2008/032).
PURPOSE
The purpose of the present study was to examine the effect of minimal hearing loss (HL) on children's ability to perform simultaneous tasks in quiet and in noise.
METHOD
Ten children with minimal HL and 11 children with normal hearing (NH) participated. Both groups ranged in age from 8 to 12 years. The children categorized common words (primary task) while completing dot-to-dot games (secondary task) in quiet as well as in noise presented at 0 dB and +6 dB signal-to-noise ratios (SNRs). It was hypothesized that the children's progression through the dot-to-dot games would slow as they encountered more difficult listening environments. This hypothesis was based on the theory that listeners have limited cognitive resources to allocate to any combination of tasks.
RESULTS
The dot rate of both groups decreased similarly in the multitasking conditions relative to baseline. However, no other differences between groups or listening conditions were revealed. Significantly poorer word categorization was observed for the children with minimal HL in noise.
CONCLUSION
These data suggest that children with minimal HL may be unable to respond to a difficult listening task by drawing resources from other tasks to compensate.
目的
本研究旨在探讨轻度听力损失（HL）对儿童在安静和噪声环境中执行同时任务能力的影响。
方法
10名轻度HL儿童和11名听力正常（NH）儿童参与研究。两组儿童年龄均在8至12岁之间。儿童在安静环境以及信噪比为0 dB和 +6 dB的噪声环境中完成连点游戏（次要任务）的同时对常见单词进行分类（主要任务）。研究假设，随着儿童遇到更困难的听力环境，他们完成连点游戏的进度会减慢。这一假设基于这样的理论，即听者分配给任何任务组合的认知资源有限。
结果
与基线相比，两组在多任务条件下的点速率下降情况相似。然而，未发现组间或听力条件之间的其他差异。在噪声环境中，轻度HL儿童的单词分类明显较差。
结论
这些数据表明，轻度HL儿童可能无法通过从其他任务中获取资源来补偿，从而应对困难的听力任务。
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