Event durations are perceived to be shorter under divided attention. “Time shrinkage” is thought to be due to rapid attentional switches between tasks, leading to a loss of input samples, and hence, an under-estimation of duration. However, few studies have considered whether this phenomenon applies to durations relevant to time-based phonetic categorization. In this study, participants categorized auditory stimuli varying in voice onset time (VOT) as /ɡ/ or /k/. They did so under focused attention (auditory task alone) or while performing a low-level visual task at the same time (divided attention). Under divided attention, there was increased response imprecision but no bias toward hearing /ɡ/, the shorter-VOT sound. It is concluded that sample loss under divided attention does not apply to the perception of phonetic contrasts within the VOT range.

中文翻译：

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在注意力分散下的语音分类和语音起音时间的辨别。

在注意力分散的情况下，事件持续时间被认为较短。人们认为“时间收缩”是由于任务之间的快速注意力切换导致输入样本的丢失，因此持续时间的估计不足。但是，很少有研究考虑这种现象是否适用于与基于时间的语音分类有关的持续时间。在这项研究中，参与者将听觉刺激的发声时间（VOT）分为/ɡ/或/ k /。他们这样做是在集中注意力的情况下（仅听觉任务），或者在同时执行低级视觉任务时（分散注意力）。在注意力分散的情况下，反应的不精确性增加，但对听觉/ɡ/（较短的VOT声音）没有偏见。