To enhance student performance, prevent attrition, and build a learning community, two courses were linked together by requiring concurrent enrollment. Students in an unlinked class were used as a comparison group. Grades, evaluations, and attrition rate suggest that linking courses can improve writing and exam scores and reduce attrition.
The Journal of General Education
Cargill, Kima and Kalikoff, Beth, "Linked Psychology and Writing Courses Across the Curriculum" (2007). SIAS Faculty Publications. 73.