Patrick Lashell

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This study examined younger (n = 16) and older (n = 16) listeners' processing of dysarthric speech-a naturally occurring form of signal degradation. It aimed to determine how age, hearing acuity, memory, and vocabulary knowledge interacted in speech recognition and lexical segmentation. Listener transcripts were coded for accuracy and pattern of lexical(More)
Contemporary New Zealand English has distinctive pronunciations of three characteristic vowels. Did the evolution of these distinctive pronunciations occur in all words at the same time or were different words affected differently? We analyze the changing pronunciation of New Zealand English in a large set of recordings of speakers born over a 130 year(More)
Language learners are sometimes faced with the problem of learning from input that is inconsistent or unexpected. Unexpected patterns may be typologically rare (marked) or contrary to the pattern in the first language. Using a novel game-like experimental paradigm, we examine the interaction of these factors for a set of artificial languages differing in(More)
PURPOSE To determine how increased vocal loudness and reduced speech rate affect listeners' cognitive-perceptual processing of hypokinetic dysarthric speech associated with Parkinson's disease. METHOD Fifty-one healthy listener participants completed a speech perception experiment. Listeners repeated phrases produced by 5 individuals with dysarthria(More)
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