The Study of Private Speech
Following Vygotsky’s to investigate inner sp seuegchg eisntidoinrectly through its vocal, objective, manifestation, numerous researchers have dedicated themselves to what has come to be known as the study of private speech. If, as Vygotsky argued, private (egocentric) speech is similar in form and function to inner speech and different in only one aspect, outward vocalization, private speech, both among LI and L2 speakers, should provide important clues about the nature of inner speech.
The study of private speech has become an important testing ground for many of Vygotsky’s, Piaget’s, and others’ hypotheses concerning mental and linguistic development. By now, the body of work on LI and L2 private speech is quite voluminous (for an estimate of the breadth and depth of this field of study, see reviews
of the literature in Berk, 1992; McCafferty, 1994a; Ohta, 2001; Winsler, Carlton, & Barry, 2000). Although all private speech studies are potentially relevant to inner speech, the main focus of the majority of these investigations is private (audible) speech as an interesting phenomenon in itself. In other words, the researchers’ interest lies in finding out the structural features, amount and age of occurrence, and functions of private speech, without much concern for the implications that this form of vocalized, self-directed speech poses for inner speech. Only a few studies deliberately pursue connections between private and inner speech, that is, purposely look at private speech to find evidence that might illuminate the phenomenon of inner speech (Fry, 1992; Goudena, 1992; John-Steiner, 1992; McCafferty, 1998; Pomper, 1990).
Although the first wave of private speech studies dealt primarily with private speech in the L1, a growing number of researchers have turned their attention to private speech among L2 learners or in bilingual scenarios. Because of its mediating role in the construction of the linguistically-supported, social mind, private speech has become a particularly appealing topic within the sociocultural theory approach to L2 learning. A large number of studies within the L2 sociocultural field have focused on the regulatory function of private speech during solution of cognitive-verbal tasks (Appel & Lantolf, 1994; Brooks & Donato, 1994; Brooks, Donato, & McGlone, 1997;
Centeno-Cortes & Jimenez, 2004; Frawley & Lantolf, 1985; Lantolf & Frawley, 1984; Lantolf, DiCamilla,& Ahmed 1997; McCafferty, 1992,1994b, 1998). Within this line of research, private speech is conceived as externalized inner speech, which is deployed in an effort to self-regulate behavior and gain control over a task. This type of study is thus particularly relevant to inner speech as it relates to the issue of externalization. Until recently, the role of private speech in the internalization of the L2 had been little explored. A seminal investigation by Saville-Troike (1988) provided
evidence, however, that learners sometimes use audible private speech in order to learn, or internalize, the L2. Following Saville-Troike, several researchers have begun to look at the internalizing or L2 learning function of private speech (Centeno-Cortes, 2003; Lantolf & Yanez, 2003; Ohta, 2001).
Taken From:Inner Speech – L2 hinking words in a second langunge