Previous studies have researched how developer experience affects code quality, but difficulty was ignored although experienced developers are more likely to work on more complex parts of a project. We examine work difficulty by focusing on revised files. Using product metrics, we evaluate file complexity for each type of file origin. Specifically, we analyze three large commercial projects (each with about 250,000 LOC) executed by the same organization to analyze the relationship between previous project experience and developer's work. Although experienced developers do not necessarily work on more complicated files, they introduce fewer defects, especially if the difference in work difficulty is not significant.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.