Human interactions are often improvised rather than scripted, which suggests that efficient coordination can emerge even when collective plans are largely underspecified. One possibility is that such forms of coordination primarily rely on mutual influences between interactive partners, and on perception–action couplings such as entrainment or mimicry. Yet some forms of improvised joint actions appear difficult to explain solely by appealing to these emergent mechanisms. Here, we focus on collective free improvisation, a form of highly unplanned creative practice where both (...) agents' subjective reports and the complexity of their interactions suggest that shared intentions may sometimes emerge to support coordination during the course of the improvisation, even in the absence of verbal communication. In four experiments, we show that shared intentions spontaneously emerge during collective musical improvisations, and that they foster coordination on multiple levels, over and beyond the mere influence of shared information. We also show that musicians deploy communicative strategies to manifest and propagate their intentions within the group, and that this predicts better coordination. Overall, our results suggest that improvised and scripted joint actions are more continuous with one another than it first seems, and that they differ merely in the extent to which they rely on emergent or planned coordination mechanisms. (shrink)

Enactivists claim that social cognition is constituted by interactive processes and even more radically that there is ‘no observation without interaction’. Nevertheless, the notion of interaction at the core of the account has not yet being characterized in a way that makes good the claim that interactions actually constitute social understanding rather than merely facilitating or causally contributing to it. This paper seeks to complement the enactivist approach by offering an account of basic joint action that involves and brings with (...) it basic forms of mental understanding. The paper turns to theories of joint action rather than theories of perception as some enactivists have done :535–543, 2008; Thompson in J Conscious Stud 8:1–32, 2001), to gain insight into the kind of interactions that underpin our understanding of other minds, and in that way, supplement the interactionist-enactive account. In line with Enactivism, the paper argues that this kind of social understanding is practical rather than theoretical and that it is cognitively more basic and developmentally prior when compared to other ways we come to understand other minds. (shrink)

People walk, build, paint and otherwise act together with a purpose in myriad ways. What is the relation between the actions people perform in acting together with a purpose and the outcome, or outcomes, to which their actions are directed? We argue that fully characterising this relation will require appeal not only to intention, knowledge and other familiar philosophical paraphernalia but also to another kind of representation involved in preparing and executing actions, namely motor representation. If we are right, motor (...) representation plays a central role in the story of acting together. (shrink)

Many of the things we do are, or could be, done with others. Mundane examples favoured by philosophers include painting a house together (Bratman 1992), li.

Contemporary theories of institutional group agency have focused on modeling democratically legitimate institutional group agents. Yet many countries in the world are democratic only on paper, with their governing structures relying, to a large extent, on informal power networks. I give a paradigmatic example of the governance in a de facto nondemocratic state based on sistema, and then explain how we can model something like a sistema- based group to reflect both its differences with widely theorized liberal-democratic groups and its (...) status with respect to its members. (shrink)

When individuals interact with others, perceived information is transmitted among their brains. The EEG-based hyperscanning technique, which provides an approach to explore dynamic brain activities between two or more interactive individuals and their underlying neural mechanisms, has been applied to study different aspects of social interactions since 2010. Recently there has been an increase in research on EEG-based hyperscanning of social interactions. This paper summarizes the application of EEG-based hyperscanning on the dynamic brain activities during social interactions according to the (...) experimental designs and contents, discusses the possibility of applying inter-brain synchrony to social communication systems and analyzes the contributions and the limitations of these investigations. Furthermore, this paper sheds light on some new challenges to future EEG-based hyperscanning studies and the emerging field of EEG-based hyperscanning for pursuing the broader research field of social interactions. (shrink)