Persistence, the tendency to repeat a recently used variant in speech, has been observed for a range of sociolinguistic variables. This paper uses quantitative data from ING and TD in Philadelphia English to show that persistence reflects morphological structure and can therefore be a useful tool for defining variables at the phonology–morphology interface. For both ING and TD, persistence arises only when prime and target belong to the same morphological category, with additional interactions between morphological category and lexical repetition. This pattern of results suggests that both the linguistic variables and cognitive processes at play are multifactorial.

中文翻译：

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语音和形态变异的持久性

对于一系列社会语言学变量，已经观察到持续性，即重复最近使用的语音变体的趋势。本文使用来自费城英语的 ING 和 TD 的定量数据来表明持久性反映了形态结构，因此可以成为在语音-形态界面定义变量的有用工具。对于 ING 和 TD，持久性仅在主要和目标属于同一形态类别时才会出现，并且形态类别和词汇重复之间存在额外的相互作用。这种结果模式表明，语言变量和认知过程都是多因素的。