Across a three-year program, we will develop, evaluate and disseminate two educational modules designed to be infused into STEM professional development/ethics courses. Drawing from social psychology research on gender bias and sexual harassment in STEM,  the modules’ objective is to expand traditional ethics training beyond ethical research practices to encompass ethical behavior among fellow researchers. Modules will be piloted at SSU and then disseminated using STEM-Net to other CSU campuses with an eventual goal of nationwide dissemination.