IPSR-Institutional Review Board, Institute for Population and Social Research (IPSR) held the 6^th Research Ethics Training (1/2019), entitled Ethical Issues in Social Sciences on March 8, 2019 at Pracha Sangkom Udompat, IPSR, Mahidol University, Salaya Campus. The training opened for Mahidol faculties, researchers, students, as well as publics with propose to demonstrate a research ethics guideline and essential ethical principles. Emeritus Professor Dr. Pramote Prasartkul was invited to be the chairman of this training. In addition, two experts, Associate Professor Dr. Chai Podhisita and Associate Professor Dr. Sirinan Kittisuksathit, gave a talk on research ethical issue development, ethical principles in social and behavior perspective, and practical guideline for undertaking a social sciences research.