The University of Tehran Journal of Foreign Language Research 2588-4123 9 1 2019 04 21 Code-Switching and Its Relationship to Other Language Contact Phenomena Code-Switching and Its Relationship to Other Language Contact Phenomena 25 52 70886 10.22059/jflr.2019.250069.459 FA Parsa Bamshadi Shahid Beheshti University Negar Davari Ardakani Department of Linguistics, Faculty of Literatures and Humanities, Shahid Beheshti University, Tehran, Iran Journal Article 2018 01 11 During the last three decades, code-switching has been one of the most interesting issues in the field of sociolinguistics. Code-switching is a language contact phenomenon which can be seen in many bi/multilingual societies. Various definitions are suggested for code-switching that one cannot easily find a common point among them. Therefore, it is necessary to try to find a practical and comprehensive definition or a systematic classification of the existing definitions. The relationship between code-switching and other language contact phenomena is important as well. In the present study, we deal with the issue of code-switching and its various definitions, its previous studies, its relationship to other language contact phenomena (such as bi/multilingualism, linguistic borrowing, code-mixing, interference and mixed language), its functions as well as the advantages of studying it. This research is a part of a wider research project dealing with various aspects of code-switching which its other parts will be presented in the near future. During the last three decades, code-switching has been one of the most interesting issues in the field of sociolinguistics. Code-switching is a language contact phenomenon which can be seen in many bi/multilingual societies. Various definitions are suggested for code-switching that one cannot easily find a common point among them. Therefore, it is necessary to try to find a practical and comprehensive definition or a systematic classification of the existing definitions. The relationship between code-switching and other language contact phenomena is important as well. In the present study, we deal with the issue of code-switching and its various definitions, its previous studies, its relationship to other language contact phenomena (such as bi/multilingualism, linguistic borrowing, code-mixing, interference and mixed language), its functions as well as the advantages of studying it. This research is a part of a wider research project dealing with various aspects of code-switching which its other parts will be presented in the near future. https://jflr.ut.ac.ir/article_70886_55584c4cc3fd88339fd074cb0100521e.pdf