Frontmatter -- Acknowledgements -- Contents -- Introduction -- Introduction to the Corpus of Collaborative Oral Tasks -- A Multi-Dimensional Analysis of the Corpus of Collaborative Oral Tasks -- Use of phrase-frames in L2 students' Oral production Across proficiency sub-Levels -- Individual and shared Assessment of EsL students' paired Oral Test performance: Examining Rater Judgments and Lexico-grammatical features -- Exploring Multiple profiles of Highly Collaborative paired Oral Tasks in an L2 speaking Test of English -- Exploring the Impact of situational Characteristics on the Linguistic features of spoken Oral Assessment Tasks -- Effects of Task and Gender on Interactive spoken fluency and the Mediating Role of Alignment -- EsL students' Use of suprasegmental features in Informative and Opinion-based Tasks -- Appendix: A Detailed Description of Tasks in the Corpus of Collaborative Oral Tasks (CCOT) -- About the Contributors -- Index