The tools discussed so far in this book have been fairly simple, mostly requiring only paper, pictures, a computer, smartphone, apps, and software. However, recent technological advancements are enabling researchers to examine L2 learning from innovative different angles. Newer studies have investigated corrective feedback and task-based interaction utilizing tools such as eye-trackers, brain-imaging, and ultrasound imaging, offering fresh perspectives on second language learners’ L2 processing, development, and learning. While these technologies are unlikely to replace the traditional tools of investigation covered elsewhere in this book, it seems likely they will be increasingly used, possibly in conjunction with commonly used techniques in psycholinguistic approaches to research topics such as prompted production, reaction time, and priming, adding to our understanding of how interaction, feedback, and tasks impact L2 learning.