Historical linguists are connected with the historical development of languages and processes involved language change. Historical linguists look into the nature of language change and its causes. They also explore methods and techniques to reconstruct linguistic history and establish the relationship between languages that belong to the same language family.历史语言学家与语言的历史发展有关，而过程涉及到语言的变化。历史语言学家研究语言变化的本质及其原因。他们还探讨了重建语言历史的方法和技巧，并建立了属于同一语系的语言之间的关系。