Though they are both master’s degrees, an MS in HR and an MS in I/O Psychology focus on different areas of study. I/O psychology is the study of human behavior in the workplace, while HR management is the study of managing people in the workplace. Courses in Walden’s MS in I/O Psychology degree program include psychology and research courses. Courses in Walden’s MS in Human Resource Management degree program include performance management, legal and regulatory issues, and human resource analytics.