Bachelor Thesis from the year 2014 in the subject American Studies - Linguistics, grade: 1,0, http://www.uni-jena.de/ (Anglistik/Amerikanistik), course: First Language Acquisition, language: English, abstract: “Language Acquisition represents, perhaps, the most impressive achievement in human development. This is all the more fascinating since this process is quite rapid, and the successive stages for the progressive acquisition of the native language follow a quite similar chronology across languages.” (Dominey et al. 2004: 122) What the linguist Peter Dominey here states describes people’s fascination about language, specifically language acquisition. Both are highly complex frameworks whose investigation, indeed, can be regarded as an inexhaustible enterprise. Nevertheless, research has been willing to face that challenge, and, over several decades, linguists have been trying to find out how exactly children acquire their native language. Children all over the world, regardless of language and culture, eventually acquire their mother tongue. However, the question how exactly children learn language has not been answered unanimously. One of the interesting observations in language is that adults change their speech while talking to children – a phenomenon referred to as Child-Directed Speech (CDS). Why does this adjustment take place? Changing one’s own speech in conversation with children seems to occur quite intuitively and can be observed in any situation of everyday life in which adults and children are involved. Due to the examination of cross-cultural issues in my minor bachelor studies and given my personal interest in other cultures, I attach high importance to the consideration of cultural differences when investigating children’s first language acquisition. Moreover, it not only seems to be highly interesting but also indispensable to link theoretical aspects with practical relevance and vice versa: Ongoing general discussions about upbringing and education have revealed the high social relevance of this subject. Thus, the aim of this paper is to examine the influence of CDS on children’s first language acquisition. This will be accomplished by linking theoretical linguistic theory with empirical findings from different fields of research.