Preemptive focus on form (FonF) is perhaps the youngest branch in the field of incidental focus on form, and as such, it remains an under-researched area in the field. While examining the rate and characteristics of learner- and teacher-initiated preemptive FonF, this book also explores the rate and attributes of uptake which is considered to be the best measure to gauge the effectiveness of focus on form instruction. Therefore, this book investigates what is (not) meant and (not) measured by uptake. While eliminating the shortcomings of previous empirical studies on FonF, the authors describe their research involving an elicitation instrument, namely "uptake sheet" and how to employ it to get a more accountable picture on uptake. Studying this book will help SLA researchers and language teachers enrich their vision on the nature and rate of uptake and would pave the way for further research on exploring multiple instances of uptake not accounted so far in the literature.