Complementing this language-in-isolation approach is the more recent development of an extensive "nonverbal communication" literature that pays scarce attention to language.
The traditional separation of research on language from that on other aspects of face-to-face interaction is not maintained today as strictly as it has been. On the one hand, there is, for example, extensive discussion of "sociolinguistics," "speech acts," and "pragmatics" in the linguistic literature. On the other, elements of intonation and syntax are treated in some "nonverbal communication" studies. And in some studies of interaction, such as the "structural" studies discussed later, some aspects of interaction are approached from an essentially linguistic point of view.