The Department of Economics at Duke University has endeavored to increase participation in undergraduate honors thesis research while ensuring a high-quality learning experience. Given the faculty-to-student ratio in the department (approximately 1:16), increasing research participation required the creation of a stable, replicable framework for mentoring students through research. The department aimed to make the research experience more consistent and interactive so that students also learned from each other in a group setting. Here, the authors assess the relationship between changes in mentoring support of honors research and students' scientific reasoning and writing skills reflected in their undergraduate theses. They find that students who participated in structured courses designed to support and enhance their research exhibited the strongest learning outcomes, as measured by systematic writing assessment.