This document summarizes research on factors that influence faculty selection and use of open educational resources (OER) and commercial textbooks. It finds that while awareness of OER is moderate, many faculty who select course materials are unaware or know little about OER. The top factors influencing selection are content quality, ease of use, and cost to students. While faculty perceive OER quality as similar to commercial resources, non-users view OER quality as lower. Many faculty are aware that textbook costs affect students but receive frequent queries about alternatives.