This paper investigates a special kind of social meaning-making manifest in how we experience static objects and properties of our everyday world. This happens, for example, when we recognize objects like vacuum cleaners, sliced tomatoes, and sneakers as placed in special sites in the environment. Given the compositional features of such images, we see them as designed to accomplish communicative functions. It is argued that object configurations of this kind are recognized as externalized ostensive cues. They are seen as having (...) been created with the intention of setting off an intersubjective mode of perception. This significantly changes the perceiver's semiotic exploration of the scene. From a `private' mode of sense-making mostly structured by reference to episodic, autobiographical experiential content, the perceiver takes a language stance. In other words, the perceiver adopts a qualitatively different meaning-constructing strategy in dealing with such images. Defending this claim, we present evidence from an empirical investigation of 20 participants' construals of photographic images depicting everyday static objects. We show that a subset of these object configurations evoke a special kind of socially responsive attitude as manifested in participants' introspective reports. The importance of these findings is brought out by discussion of parallels in neuro-cognitive work and how ostensive cues influence infant behavior. (shrink)

People are not as fast or as strong as many other creatures that evolved around us. What gives us an evolutionary advantage is working together to achieve common aims. Coordinating joint action begins at a tender age with such cooperative activities as alternating babbling and clapping games. Adult joint activities are far more complex and use multiple means of coordination. Joint action has attracted qualitative analyses by sociolinguists, cognitive scientists, and philosophers as well as empirical analyses and theories by cognitive (...) scientists. Here, we analyze how joint action is spontaneously coordinated from start to finish in a novel complex real‐life joint activity, assembling a piece of furniture, a task that captures the essentials of joint action, collaborators, things in the world, and communicative devices. Pairs of strangers assembled a TV cart from a stack of parts and a photo of the completed cart. Coordination prior to each assembly action was coded as explicit, using speech or gesture, or implicit, actions that both advanced the task and communicated the next step. Initial planning relied on explicit communication about structure, but not action nor division of labor, which were improvised. That served to establish a joint representation of the goal that informed actions and monitored progress. As assembly progressed, coordination was increasingly implicit, through actions alone. Joint action is a dynamic interplay of explicit and implicit signaling with respect to things in the world to coordinate ongoing progress, guided by a shared representation of the goal. (shrink)

Stalnaker’s Context deploys the core machinery of common ground, possible worlds, and epistemic accessibility to mount a powerful case for the ‘autonomy of pragmatics’: the utility of theorizing about discourse function independently of specific linguistic mechanisms. Illocutionary force lies at the peripherybetween pragmatics—as the rational, non-conventional dynamics of context change—and semantics—as a conventional compositional mechanism for determining truth-conditional contents—in an interesting way. I argue that the conventionalization of illocutionary force, most notably in assertion, has important crosscontextual consequences that are not (...) fully captured by a specification of dynamic effects on common ground. More generally, I suggest that Stalnaker’s purely informational, propositional analysis of both semantic content and dynamic effects distorts our understanding of the function of language, especially of the real-world commitments and consequences engendered by robustly ‘expressive’ language like slurs, honorifics, and thick terms. (shrink)

We studied collaborative skill acquisition in a dynamic setting with the game Co-op Space Fortress. While gaining expertise, the majority of subjects became increasingly consistent in the role they adopted without being able to communicate. Moreover, they acted in anticipation of the future task state. We constructed a collaborative skill acquisition model in the cognitive architecture ACT-R that reproduced subject skill acquisition trajectory. It modeled role adoption through reinforcement learning and predictive processes through motion extrapolation and learned relevant control parameters (...) using both a reinforcement learning procedure and a new to ACT-R supervised learning procedure. This is the first integrated cognitive model of collaborative skill acquisition and, as such, gives us valuable insights into the multiple cognitive processes that are involved in learning to collaborate. (shrink)

We take up issues raised in the commentaries about our proposal that social robots are depictions of social agents. Among these issues are the realism of social agents, experiencing robots, communicating with robots, anthropomorphism, and attributing traits to robots. We end with comments about the future of social robots.

This study is concerned with the organisation of gestural phases of non-movement, in particular the prolonged hold and provisional home position, as accountably and in situ produced segments of behaviour. Through fine-grained transcriptions and multimodal analysis of videotaped conversation in natural and everyday settings, it is found that movement phases may be exploited by participants in order to indicate that a pursued trajectory or line of action is maintained, suspended or abandoned. Also, through constant monitoring, participants may adjust the location (...) of non-movement as the interaction unfolds in time. It is argued that various possible locations of non-movement are arranged along a continuum ranging from the space of gesticulation to a relaxed rest position and that these locations reflect various degrees of involvement or claim of speakership in the gesturer. (shrink)