Pandiangan, Junita, 2018. Analysis of Code Switching and Code Mixing Performed by ViaVia Travel’s Staff Yogyakarta on their WhatsApp Group. Thesis Undergraduate Program, Mercu Buana University of Yogyakarta. Advisor: Agustinus Hary Setyawan, S.Pd., MA.

Keywords: Code Switching, Code Mixing, WhatsApp Conversation, Bilingual, Multilingual

The aim of the research is to analyze the Code Switching and Code Mixing that is performed by ViaVia Travel‟s staffs. The staffs use Code Switching and Code Mixing in their daily conversation on their WhatsApp group. The focus of the research is to find the types of Code Switching and Code Mixing that are found on the WhatsApp group by the researcher. Furthermore, the researcher analyses the reasons why ViaVia Travel‟s staffs use Code Mixing and Code Switching. This research uses qualitative methods to analyze the data which is obtained from the conversation history stored in the researcher‟s personal computer. To conduct this research, the researcher uses several theories from different sociolinguists.