International studies of language middle construction have been continuing for quite a long time.

国际上对中间结构的研究有较长的历史。

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Case studies of children who are isolated from others reveal that they lack a firm self-concept, and their mental and psychological development is severely hindered by lack of language.

对孤立儿童的个案研究表明，他们缺乏坚定的自我概念，而其语言能力的缺乏严重阻碍了他们的智力和心理发展。

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And one reason we know this is because of the demonstrated case studies where a language is created within a single generation.

我们之所以这样认为,是因为有许多的个案研究,都证明了一代人之内是可以创造出语言的

耶鲁公开课 - 心理学导论课程节选

Well, I am a Linguistics major, so I do a lot of research and kind of focus a lot of my studies on acquiring language.

我是语言学专业的，所以做了很多专注于语言习得的研究。

英语学习技巧 - SpeakingMax英语口语达人

And more recently, there's been case studies of children who acquire sign language.

而近期更有些关于儿童学习手语的,个案研究

耶鲁公开课 - 心理学导论课程节选

To demonstrate the causal role of language, what's needed are studies that directly manipulate language and look for effects in cognition.

WSJ: Does Language Influence Culture?

She had been staying in the church while on a working holiday to fund her language studies at the University of Gdansk.

BBC: Killer Tobin had 'appalling record'

Speaking on Wednesday, he said that "the establishment of an Institute of Ulster-Scots Studies offered a unique opportunity to promote the understanding of Ulster-Scots' language, history and culture, not only within the context of Northern Ireland but beyond".

BBC: New Ulster-Scots institute