While research in heritage language phonology has found that transfer from the majority language can lead to divergent attainment in adult heritage language grammars, the extent to which language transfer develops during a heritage speaker's lifespan is understudied. To explore such cross-linguistic transfer, I examine the rate of glottalization between consonant-to-vowel sequences at word junctures produced by child and adult Spanish heritage speakers (i.e., HSs) in both languages. My results show that, in Spanish, child HSs produce greater rates of vowel-initial glottal phonation than their age-matched monolingually-raised Spanish counterparts, suggesting that the Spanish child HSs’ grammars are more permeable to transfer than those of the adult HSs. In English, child and adult HSs show similarly low rates of glottal phonation when compared to their age-matched monolingually-raised English speakers’ counterparts. The findings for English can be explained by either an account of transfer at the individual level or the community level.

虽然遗产语言音系学的研究发现，从主要语言的迁移可能会导致成人遗产语言语法的不同程度的发展，但在遗产说话者的一生中语言迁移发展的程度尚未得到充分研究。为了探索这种跨语言迁移，我检查了儿童和成人西班牙语传统使用者（即 HS）在两种语言中产生的单词连接处的辅音到元音序列之间的声门化率。我的研究结果表明，在西班牙语中，儿童 HS 产生元音声母声门发声的比例高于同龄、单语长大的西班牙语同龄人，这表明西班牙语儿童 HS 的语法比成人 HS 的语法更容易迁移。在英语中，与年龄匹配的单语英语使用者相比，儿童和成人 HS 的声门发声率同样较低。英语的研究结果可以通过个人层面或社区层面的转移账户来解释。