“…Examples of such practices *Address correspondence to this author at the Department of Psychology of the Catholic University of Milan, at Largo Gemelli 1, 20123, Milan, Italy; Tel: +39 02 7234 3734; E-mail: andrea.gaggioli@unicatt.it include planning together, language play, musing, singing, humor, acting out, and role-playing games [9]. However, there is still limited understanding about the key aspects that facilitate (or obstacle) effective cooperation and creative engagement in learning contexts [10]. Recently, psychologist and educator Keith Sawyer introduced the concept of "group flow" as the key to creative collaboration, describing it as "a collective state of mind (…) a peak experience, a group performing at its top level of ability" [11, p. 43].…”