Abstract
This study investigates whether listeners' cue weighting predicts their real-time use of asynchronous acoustic information in spoken word recognition at both group and individual levels. By focusing on the time course of cue integration, we seek to distinguish between two theoretical views: the associated view (cue weighting is linked to cue integration strategy) and the independent view (no such relationship). The current study examines Seoul Korean listeners' (n = 62) weighting of voice onset time (VOT, available earlier in time) and onset fundamental frequency of the following vowel (F0, available later in time) when perceiving Korean stop contrasts (Experiment 1: cue-weighting perception task) and the timing of VOT integration when recognizing Korean words that begin with a stop (Experiment 2: visual-world eye-tracking task). The group-level results reveal that the timing of the early cue (VOT) integration is delayed when the later cue (F0) serves as the primary cue to process the stop contrast, supporting a relationship between cue weighting and the timing of cue integration (the associated view). At the individual level, listeners with greater reliance on F0 than VOT exhibited a further delayed integration of VOT. These findings suggest that the real-time processing of asynchronously occurring acoustic cues for lexical activation is modulated by the weight that listeners assign to those cues, providing evidence for the associated view of cue integration. This study offers insights into the mechanisms of cue integration and spoken word recognition, and they shed light on variability in cue integration strategies among listeners.
Published Version
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