We conducted two experiments to evaluate Meyerhoff and Scholl's (2018, Cognition 170, 88-94) hypothesis that illusory crescents contribute to resolutions in audiovisual stream/bounce displays. In Experiment 1, we measured illusory crescent size in the launching effect as a function of speed, overlap, and sound. In Experiment 2, we tabulated stream and bounce responses to similar stimuli with the same speed, sound, and overlap conditions as Experiment 1. Our critical manipulation of target speed spanned the range of values from typical stream/bounce investigations of ∼5 degrees/s up to the target speeds employed by Meyerhoff and Scholl ∼38 degrees/s. We replicated Meyerhoff and Scholl's findings at higher speeds, but not at slower speeds. Critically, we found that speed influenced crescent size judgements and bouncing responses in opposite directions. As target speed increased, illusory crescent size increased (Experiment 1), but the overall percentage of bounce responses decreased (Experiment 2). Additionally, we found that sound failed to enhance illusory crescent size at slower speeds but promotes bouncing responses at all speeds. The disassociation of the effects of speed and sound on illusory crescents with those effects on reported streaming/bouncing in similar displays provides compelling evidence against Meyerhoff and Scholl's hypothesis. Therefore, we conclude that illusory crescents do not account for the pattern of responses attributed to the stream/bounce effect.

中文翻译：

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虚幻新月与流/弹跳效应之间的关系。


我们进行了两项实验来评估 Meyerhoff 和 Scholl (2018, Cognition 170, 88-94) 的假设，即虚幻的新月有助于视听流/跳动显示的分辨率。在实验 1 中，我们测量了发射效果中虚幻新月的大小作为速度、重叠和声音的函数。在实验 2 中，我们以与实验 1 相同的速度、声音和重叠条件列出了对类似刺激的流和弹跳响应。我们对目标速度的关键操纵跨越了典型流/弹跳研究的值范围，约为 5 度/秒高达 Meyerhoff 和 Scholl 采用的目标速度~38 度/秒。我们以较高的速度复制了迈耶霍夫和肖尔的发现，但在较慢的速度下则不然。至关重要的是，我们发现速度会影响新月体大小的判断和相反方向的弹跳反应。随着目标速度的增加，虚幻新月的大小增加（实验 1），但弹跳响应的总体百分比下降（实验 2）。此外，我们发现声音无法在较慢的速度下增强虚幻新月的大小，但会在所有速度下促进弹跳反应。速度和声音对虚幻新月的影响与对类似显示器中报告的流/弹跳的影响的分离提供了反驳迈尔霍夫和肖尔假设的令人信服的证据。因此，我们得出结论，虚幻的新月不能解释归因于流/反弹效应的响应模式。