Abstract
To improvise together for the pure curiosity, joy, and beauty of it constitutes a central but often neglected ability of human beings. Integrating pragmatic, practical, and technical skills with conceptual understanding, improvisation is adaptive and collaborative. It seems made to counter the challenges of living in a fleeting present, unconstrained by physical and historical boundaries, and very likely has deep evolutionary roots. I present an account of joint improvisation in the performative arts based in reviews of empirical research in the cognitive sciences, phenomenology, neuroscience, and philosophy, using examples from modern dance and jazz music. The account may be used for generating cross-disciplinary hypotheses about improvisation for investigation within a multitude of fields and is meant to encourage interdisciplinary work and collaboration between practitioners and academic researchers. The major goal is to elucidate the interaction dynamics that underlies joint improvisation by considering the variety of processes that support sensorimotor, experiential, emotional, meta-cognitive, and collaborative forms of interaction and lead to the coordination and synchronization of behavior. I claim that improvisation is an intelligent cognitive skill associated with meta-awareness, open to monitoring and control. It involves both automatized and flexible behavior and can occur without conscious awareness. Improvising in principle is independent of verbal language and higher-order thought, but nevertheless profits from the presence of multiple converging processes.