Tammy Madsen (Ph.D., UCLA) is Associate Professor of Strategy and Chair of the Management Department at the Leavey School of Business, Santa Clara University. Her research interests are at the intersection of strategy, competitive heterogeneity, and firm and industry evolution. Her most recent work explores how innovation contributes to sustained differences in superior profits among rivals and how cohort effects influence competitive heterogeneity following an industry shock. Her work has received various awards from the Business Policy & Strategy (BPS) Division of the Academy of Management including the Glueck Best Paper Award and appears in a variety of journals such as the Strategic Management Journal, Organization Science, Journal of Management Studies, Industrial and Corporate Change, Journal of Knowledge Management and International Marketing Review. She serves on the editorial review boards of SMJ, SEJ, and AMR. Tammy Madsen also previously served as Chair of the BPS Division of the Academy of Management and Chair of INFORMS College on Organization Science. She teaches in the areas of strategy, innovation (crowdsourcing, ecoystems), and entrepreneurship at SCU.