IPSR Director Assoc. Prof. Rossarin Gray opened the International Workshop on Impact Evaluation of Population, Health and Nutrition Programs.The workshop was sponsored by the Institute for Population and Social Research (IPSR) at Mahidol University and MEASURE Evaluation, in collaboration with the Global Evaluation and Monitoring Network for Health (GEMNet-Health). The two-week course was held from October 1 – 12, 2018 in Bangkok, Thailand.