The study of child language and, in particular, child syntax is a growing area of linguistic research, yet methodological issues often take a back seat to the findings and conclusions of specific studies in the field. This book is designed in part as a handbook to assist students and researchers in the choice and use of methods for investigating children's grammar. For example, a method (or combination of methods) can be chosen based on what is measured and who the target subject is. In addition to the selection of methods, there are also pointers for designing and conducting experimental studies and for evaluating research.