As to the study of child language acquisition, there are there basic theories about how young children learn new words: associative theory, constraints theory and social-pragmatic theory.

有关儿童习得词汇的研究主要有三种理论假设：联想学习理论、制约原则论和社会语用理论。

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The study found that the further advantage for Gaelic-speaking children may have been due to the formal teaching of the language and its extensive literature.

BBC: Bilingual children 'better at problem-solving skills'