Heffner Christopher C, Newman Rochelle S, Dilley Laura C, Idsardi William J
J Speech Lang Hear Res. 2015 Aug 1;58(4):1341-9. doi: 10.1044/2015_JSLHR-H-14-0239.
A new literature has suggested that speech rate can influence the parsing of words quite strongly in speech. The purpose of this study was to investigate differences between younger adults and older adults in the use of context speech rate in word segmentation, given that older adults perceive timing information differently from younger ones.
Younger (18-25 years) and older (55-65 years) adults performed a sentence transcription task for sentences that varied in speech rate context (i.e., distal speech rate) and a syntactic cue to the presence of a word boundary.
There were no differences between younger and older adults in their use of the distal speech rate cue to word segmentation.
The differences previously documented between younger and older adults in their perception of speech rate cues do not necessarily translate to older adults' use of those cues. Older adults' difficulties with compressed speech may arise from problems broader than just speech rate alone.
新的文献表明语速会在很大程度上影响言语中单词的切分。鉴于老年人与年轻人对时间信息的感知不同，本研究旨在调查年轻人和老年人在利用语境语速进行单词切分方面的差异。
年轻人（18至25岁）和老年人（55至65岁）对语速语境（即远端语速）和单词边界存在的句法线索不同的句子进行句子转录任务。
年轻人和老年人在利用远端语速线索进行单词切分方面没有差异。
先前记录的年轻人和老年人在语速线索感知上的差异不一定转化为老年人对这些线索的使用。老年人在理解压缩语音方面的困难可能源于比单纯语速更广泛的问题。
