1 The Construction of Preference in Engineering Design and Implications for Green Products by Erin Faith MacDonald A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Mechanical Engineering) in The University of Michigan 2008 Doctoral Committee: Professor Panos Y. Papalambros, Co‐Chair Professor Richard D. Gonzalez, Co‐Chair Professor Fred M. Feinberg Associate Professor Steven J. Skerlos