pt. 1. Nature of L2 interactional competence -- Enacting interactional competence in gaming activities: coproducing talk with virtual others / A. Piirainen-Marsh -- Learning as social action / F. Sahlstrom -- The social life of self-directed talk: a sequential phenomenon / F. Steinbach Kohler and S. L. Thorne -- Second language interaction for business and learning / G. Theodorsdottir -- Responding to questions and L2 learner interactional competence during language proficiency interviews: a microanalytic study with pedagogical implications / R. A. Van Compernolle -- pt. 2. Development of L2 Interactional competence -- Members methods, members competencies looking for evidence of language learning in longitudinal investigations of other-initiated repair / J. Hellermann -- Achieving recipient design longitudinally: evidence from a pharmacy intern in patient consultations / H. T. Nguyen -- Developing methods for interaction: a cross sectional study of disagreement sequences in French L2 / S. Pekarek Doehler and E. Pochon-Berger -- Becoming the teacher: changing participant frameworks in international teaching assistant discourse / E. F. Rine and J. K. Hall