Applied social scientist committed to supporting evidence-based programming from both a research and social policy perspective. Emphasizes responsive methodology -- both quantitative and qualitative -- to collect reliable, valid and timely data that are useful for decision makers. Utilizes a developmental perspective that recognizes that programs have their own life cycles -- from recognizing and establishing needs; program development, adoption or adaptation; implementation; sustainability, and, if warranted expansion and dissemination. Different research and evaluation methods may be better suited to answering different questions along that continuum. [ De Vos, DeVos, Devos, de Vos ]