“…In other words, some linguists support the notion of free variation because unexplainable instances of code-switching have been found to occur in natural, spontaneous speech. In terms of function, several researchers (Valdés, 1981;Sánchez, 1983;Montes-Alcalá, 2001; Raschka, Wei, & Lee, 2002;Callahan, 2009) have examined the various roles of natural, spontaneous code-switching, looking specifically at when and why subjects take part in this phenomenon. Throughout the remainder of this section, I will further discuss the above-mentioned studies in more detail in an attempt to shed additional light upon the current issues that have prompted my own comparative study on the form, frequency and function of Spanish-English code-switching found in both natural and planned speech.…”