Rebecca Teasdale is principal of Rebecca Teasdale & Associates and an assistant professor of educational psychology at the University of Illinois at Chicago. As a librarian, Rebecca held leadership positions in urban and suburban public libraries. She now helps libraries build their capacity to evaluate their offerings and make evidence-based decisions regarding programs, services, collections, and staffing. Rebecca has evaluated projects in libraries, museums, afterschool programs, and universities, as well as professional development initiatives in the US and internationally. She holds a BA in biology, an MA in library and information science, and a PhD in educational psychology with specialization in evaluation methodology.