Professor Dillon-Merrill seeks to understand and explain how and why people make the decisions that they do under conditions of uncertainty and risk. This research specifically examines critical decisions that people have made following near-miss events in situations with severe outcomes (i.e., hurricane evacuation, NASA mission management, etc.). Her past research in risk has included supporting the Department of Energy’s selection of a new tritium supply facility, aiding NASA’s Jet Propulsion Laboratory in decision making for the Mars Exploration Program, and developing a quantitative decision support tool for the management of software project resources based on an analysis of both the information system and the design. She has received research funding from the National Science Foundation, NASA, and the Department of Defense. She has served as a risk analysis and project management expert on several National Academies Committees including the Review of the New Orleans Regional Hurricane Protection Projects. From 1993-1995, she worked as a Systems Engineer for Fluor Daniel, Inc.