Chapter 1. On the complexities of interaction: An introduction (Tiina Eilittä, Pentti Haddington, Antti Kamunen, Laura Kohonen-Aho, Iira Rautiainen and Anna Vatanen)
Part I: Complexity that resides in multiactivity multisensoriality
Chapter 2. Tasting vs. eating: The methodic and situated differentiation of embodied multisensorial activities in social interaction (Lorenza Mondada)
Chapter 3. Metagaming and multiactivity: How board gamer players deal with progressivity (Emily Hofstetter and Jessica Robles)
Chapter 4. Embodied noticings as repair initiations: On multiactivity in choir rehearsals (Anna Vatanen)
Part II: Complexity that resides in asymmetries related to affordances, resources and roles
Chapter 5. Intersubjective interaction during the word explanation activity in social virtual reality (Heidi Spets)
Chapter 6. Building on linguistically exclusive talk: Access, participation and progressivity in a multinational military staff (Antti Kamunen and Pentti Haddington)
Chapter 7. Nudging questions as devices for prompting courses of action and negotiating deontic (a)symmetry in UN Military Observer training (Iira Rautiainen, Pentti Haddington and Antti Kamunen)
Part III: Complexity that resides in the coordination of participation frameworks
Chapter 8. Playing together on a large screen: Spatiality, materiality, temporality and the complexity of interaction (Heike Baldauf-Quilliatre and Biagio Ursi)
Chapter 9. Getting (others) involved with smartphones: Participation in showing sequences in multi-party settings (Iuliia Avgustis and Florence Oloff)
Chapter 10. The primacy of affective engagement in simultaneously unfolding participation frameworks (Julia Katila, Yumei Gan, Sara Goico and Marjorie Goodwin)
Part IV: Complexity that resides in the characteristics of interactional settings and environments
Chapter 11. Ambulatory openings (Elliot M. Hoey)
Chapter 12. Openings of interactions in immersive virtual reality: Identifying and recognising prospective co-participants (Pentti Haddington, Laura Kohonen-Aho, Sylvaine Tuncer and Heidi Spets)
Chapter 13. Transitions between interactional spaces: Working towards shared understanding in a hybrid workshop setting (Laura Kohonen-Aho).