Usage-based theories hold that the sole resource for language users’ linguistic systems is language use (Barlow & Kemmer, 2000; Langacker, 1988; Tomasello, 1999, 2003). Researchers working in the usage-based paradigm, which is often equated with cognitive-functional linguistics (e.g., Ibbotson, 2013, Tomasello, 2003), seem to widely agree that the primary setting for language use is interaction, with spontaneous face-to-face interaction playing a primordial role (e.g., Bybee, 2010; Clark, 1996; Geeraerts & Cuyckens, 2007; Langacker, 2008; Oakley & Hougaard, 2008; Zlatev, 2014). It should, then, follow that usage-based models of language are not only compatible with evidence from communication research but also that they are intrinsically grounded in authentic, multi-party language use in all its diversity and complexities. This should be a logical consequence, as a usage-based understanding of language processing and human sense-making cannot be separated from the study of interaction. However, the overwhelming majority of the literature in Cognitive Linguistics (CL) does not deal with the analysis of dialogic data or with issues of interactional conceptualization. It is our firm belief that this is at odds with the interactional foundation of the usage-based hypothesis. Furthermore, we are convinced that an ‘interactional turn’ is not only essential to the credibility and further development of Cognitive Linguistics as a theory of language and cognition as such. Rather, CL-inspired perspectives on interactional language use may provide insights that other, non-cognitive approaches to discourse and interaction are bound to overlook. To that aim, this special issue brings together four contributions that involve the analysis of interactional discourse phenomena by drawing on tools and methods from the broad field of Cognitive Linguistics.

As an explicitly usage-based model of language structure (Barlow & Kemmer, 2000), cognitive grammar draws on the notion of ‘usage events’ of language as the starting point from which linguistic units are schematized by language users. To be true to this claim for spoken languages, phenomena such as non-lexical sounds, intonation patterns, and certain uses of gesture should be taken into account to the degree to which they constitute the phonological pole of signs, paired in entrenched ways with conceptual content. Following through on this view of usage events also means realizing the gradable nature of signs. In addition, taking linguistic meaning as consisting of not only conceptual content but also a particular way of construing that content (Langacker, 2008, p. 43), we find that the forms of expression mentioned above play a prominent role in highlighting the ways in which speakers construe what they are talking about, in terms of different degrees of specificity, focusing, prominence, and perspective. Viewed in this way, usage events of spoken language are quite different in nature from those of written language, a point which highlights the need for differentiated accounts of the grammar of these two forms of expression taken by many languages.

Any approach to interaction is confronted with the dilemma of reconciling the empirical fact that meaning is locally and interactionally managed, as shown by conversation analysis, with the fact that conversations are subject to genres that impose conventionalized expectations for allowable contributions and inferences, as advocated by the ethnography of communication. This theoretical paper attempts to overcome this challenge by integrating Langacker’s current-discourse-space model with Barsalou’s dynamic model of situated conceptualization. With reference to these frameworks, the paper sketches a grounded socio-cognitive model of meaning construction in context that combines the situated interactional negotiation of meaning with the discursive knowledge that underlies speech genres in the form of genre-simulators. To substantiate and illustrate the theoretical considerations, the paper draws on two extracts from spoken tourist-information transactions.

Interactive language use inherently involves a process of coordination, which often leads to matching behaviour between interlocutors in different semiotic channels. We study this process of interactive alignment from a multimodal perspective: using data from head-mounted eye-trackers in a corpus of face-to-face conversations, we measure which effect gaze fixations by speakers (on their own gestures, condition 1) and fixations by interlocutors (on the gestures by those speakers, condition 2) have on subsequent gesture production by those interlocutors. The results show there is a significant effect of interlocutor gaze (condition 2), but not of speaker gaze (condition 1) on the amount of gestural alignment, with an interaction between the conditions.

Recent developments in grammatical theory seem to invite an integration of grammar and interaction; nevertheless, there are reservations on both sides. While some of these reservations can be traced to misconceptions, others are deeply rooted in the theoretical premises of each approach. The differences are, however, not very well understood; especially theoretical premises regarding the role of cognition in language use have been hindering a fruitful collaboration. Reinterpreting the results of Conversation Analysis (CA; cf. Sacks, Schegloff, & Jefferson, 1974; Sacks, 1992) in terms of Construction Grammar (Goldberg, 1995, 2006; Croft, 2001, Langacker, 2008) recasts the discursive practices identified in CA in terms of participants’ cognitive construals of the communicative situation, making the speaking subjects apparent in their strategies and conceptualizations of the interaction.