This chapter addresses methodological considerations for interfacing process and product data. It explains how methods from different research branches in Translation Studies can be combined. The combination of corpus-based work (i.e. product-oriented research) with experimental studies (i.e. process-oriented research) enables not only the quantification and interpretation of translation properties and strategies but also their explanation concerning cognitive processes and resources. Recent advances in corpus architecture and corpus querying and increasing incorporation of methods from psycholinguistics and cognitive science into process-oriented research point to a desired combination of corpus studies with a more direct, experimental insight into processing efforts. The most common methods are introduced, their strengths and shortcomings are discussed, and examples are given.