IntroductionThroughout the engineering profession, an emphasis on requiring strong communication abilities for engineering graduates has been shown in several studies 1,2 . Because of the emphasis on communication in engineering practice, "an ability to communicate effectively" is a core outcome competency within the ABET required program outcomes 3 . In a recent study of engineering graduates, communication skills were ranked with teamwork, data analysis, and problem solving as the four most important ABET outcome competencies 4 .The objective of this study was to identify which aspects of student communication skills were improved by changes to an industry-sponsored capstone senior design course and to what extent they were improved. While previous studies have indicated that industry-sponsored capstone senior design courses improve student understanding of design practice, no study to date has focused on analyzing the extent to which this industry experience improves the communication ability of the students.The civil engineering senior design course at Southern Illinois University Edwardsville (SIUE) places students in unpaid internships with local engineering agencies and companies. Practicing engineers supervising the students have discussed the importance of accurate professional communications with faculty coordinating the course. Students in this course are required to complete communication skills assignments, such as writing memos, reports, and preparing periodic progress presentations of their work. The communication assignments used as the subject of the study in this paper were reviewed by engineering faculty, in consultation with practicing professional engineering sponsors, and the staff at the SIUE Writing Center.
Previous WorkOverall lessons from past capstone courses Previous work examining the learning in engineering capstone courses has focused on teambased learning, problem-based learning, and impacts of the learning environment. To improve student teamwork experiences in any course, faculty have an opportunity to apply a wealth of knowledge from fields such as organizational or industrial psychology 5 . Some argue that effective team-based learning in capstone courses require that teams be heterogeneous and have shared goals, meaningful activities, timely internal feedback, and external comparisons and feedback 6 . Thus, for faculty to facilitate an effective team-based learning experience, they must be very deliberate in the planning of team projects, milestones, activities, feedback methods, and timing.Other research has focused on problem-based learning approaches. One study, focusing on a structural engineering capstone course, found that a problem-based learning format required significantly more time due to the additional feedback for students, and that a team-building exercise could strengthen communication between student teams and the instructor 7 . Problembased learning has also been implemented into an entire civil engineering curriculum at the Page 26.1412.2University of Colora...