In linguistics, code-switching occurs when a speaker alternates between two or more languages, or language varieties, in the context of a single conversation. Multilinguals—speakers of more than one language—sometimes use elements of multiple languages when conversing with each other.

1. Carol Myers-Scotton : Studies on codes witching, the use of two or more languages in the same conversation.

2. John J. Gumperz : On code-switching, as a speaker’s use of more than one language within a single conversation is known. This work, like his analysis of the Heathrow impasse, centered on the idea of using linguistics in the service of social justice. Though earlier accounts of code-switching had suggested that it was largely a random phenomenon — a speaker, the thinking went, might use a smattering of English followed by a smattering of Spanish in an amorphous linguistic soup — Professor Gumperz showed that this switching, however unconscious, had specific triggers, including the need to encode information about the social relationships underpinning the discourse. But though sociolinguistics as a whole embraces spoken language and the printed word, he concentrated on face-to-face verbal exchanges. 3. Maria Cecilia Velásquez : The relationship in a bilingual conversation between language choice and identity has been the subject of research in different disciplines such as sociolinguistics, psycholinguistics, and second language acquisition among others. 4. Richard Skiba : Code Switching as a Countenance of Language Interference 5. Heather Coffey : Code-switching is the practice of moving between variations of languages in different contexts. 6. William Ury : code-switching as the “use of two or more linguistic varieties in the same conversation or interaction.”

7. Rebecca Wheeler and Rachel Swords :
Contend that the correctionist approach to language response “diagnoses the child’s home speech as ‘poor English’ or ‘bad grammar,’ finding that the child does not know how to show plurality, possession, and tense,’ or the child ‘has problems’ with these.” This approach assumes that “Standard English” is the only proper form of language and tries to do away with the child’s home language. Because classrooms are not culturally or linguistically monolithic, this approach tends to exclude those students who are not fluent in “Standard English.” 8. Deric Greene and Felicia Walker : maintain that “[Code-switching] can involve the alternation between two different languages, two tonal registers, or a dialectical shift within the same language such as Standard English and Black English.”Greene and Walker also argue that code-switching is “a linguistic tool and a sign of the participants’ awareness of alternative communicative conventions.”Furthermore, code-switching has been described as “a strategy at negotiating power for the speaker” and “reflects culture and identity and promotes solidarity.” 9. OLADOSU, MICHAEL AJIBOLA:

code mixing in relation to sociolinguistics and how code mixed utterances have been triggered as a result of language gap, stylistic motivations, domains, societal factors, message intrinsic factors, physical settings and situational factors.

10. Concise Oxford Companion to the English Language CODE-MIXING AND CODE-SWITCHING. Terms in SOCIOLINGUISTICS for language and especially speech that draws to differing extents on at least two languages combined in different ways, as when a Malay/English bilingual says: This morning I hantar my baby tu dekat babysitter tu lah (hantar took, tu dekat to the, lah a particle marking solidarity). A code may be a language or a variety or style of a language; the term codemixing emphasizes hybridization, and the term code-switching emphasizes movement from one language to another.

11. Zuzana Alcnauerová

Code - switching and Code-mixing as Persuasive Strategies in Advertising

12. Kachru 1978, Muysken 2000).
The term '''code-mixing''' is variously defined in different subfields of linguistics. Many studies of [[morphology]] or [[syntax]] use the term as a synonym for [[code-switching]], the alternating use by bilingual speakers of two or more different languages within a single utterance . 13. Sridhar 1980 Studies in [[psycholinguistics]] similarly definition code-mixing as "the transition from using linguistic units (words, phrases, clauses, etc.) of one language to using those of another within a single sentence" 14. AYEOMONI, M.O. Code-Switching and Code-Mixing: Style of Language Use in Childhood in Yoruba Speech Community , This article is the report of an investigation into the types of languages acquired at different periods in the lives of members of the education elite in a speech community. 15. Humaira Bima Code-mixing and code-switching are widespread phenomena in bilingual communities where speakers use their native tongue (L1) and their second language (L2) in different domains.