His teaching expertise includes systems analysis and design, technology-assisted decision making, managing IS resources, behavioral IS research methods, and data visualitation and decision support. In addition, Marakas is an active researcher in the area of systems analysis methods, data mining and visualization, creativity enhancement, conceptual data modeling, and computer self-efficacy. Dr. Marakas is a world-renown author of textbooks. Including this text, he has written Systems Analysis and Design: An Active Approach and Decision Support Systems in the 21st Century, Second Edition, both published by Prentice Hall.