In the field of Second Language Studies, shared datasets provide a valuable contribution to second language research as many variables are held constant (e.g., participants, tasks, research context) thus allowing for an evaluation of theoretical and/or methodological perspectives that may not otherwise be comparable. This edited volume includes a wide range of studies using a common dataset (the Corpus of Collaborative Oral Tasks). The corpus includes 820 spoken tasks (268,927 words) carried out by dyads of L2 English speakers (primarily Chinese and Arabic learners). Studies included in the book are categorized into three main traditions: learner corpus research, Task-Based Language Teaching, and assessment. Because the corpus contains text and sound files, both lexico-grammatical and phonological analyses are included. Intended for researchers in the field of Second Language Studies with an interest in oral interaction research, this book provides a collection of methodological, pedagogical, and assessment studies using a common dataset.