Cognitive Science 35 (7):1390-1405 (2011)

Abstract
Although speech categories are defined by multiple acoustic dimensions, some are perceptually weighted more than others and there are residual effects of native-language weightings in non-native speech perception. Recent research on nonlinguistic sound category learning suggests that the distribution characteristics of experienced sounds influence perceptual cue weights: Increasing variability across a dimension leads listeners to rely upon it less in subsequent category learning (Holt & Lotto, 2006). The present experiment investigated the implications of this among native Japanese learning English /r/-/l/ categories. Training was accomplished using a videogame paradigm that emphasizes associations among sound categories, visual information, and players’ responses to videogame characters rather than overt categorization or explicit feedback. Subjects who played the game for 2.5 h across 5 days exhibited improvements in /r/-/l/ perception on par with 2–4 weeks of explicit categorization training in previous research and exhibited a shift toward more native-like perceptual cue weights
Keywords Speech perception  Adult plasticity  Second language learning  Categorization  Non‐native speech categorization  Learning  Auditory learning  Videogame training
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DOI 10.1111/j.1551-6709.2011.01192.x
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A Unified Model for Perceptual Learning.Aaron Seitz & Takeo Watanabe - 2005 - Trends in Cognitive Sciences 9 (7):329-334.

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