The Open Probability-based Panel Alliance (OPPA) consists of four probability-based panels: the GESIS Panel in Germany, the LISS Panel in the Netherlands, the Korean Academic Multimode Open Survey (KAMOS) in South Korea, and the Understanding America Study (UAS) in the USA. The Alliance facilitates cross-cultural survey research with probabilitybased panels across the globe, endorsing joint


The Asian Journal for Public Opinion Research (AJPOR) is the journal of the Asian Network for Public Opinion Research (ANPOR). It is published quarterly online by the Center for Asian Public Opinion Research & Collaboration Initiative (CAPORCI) in South Korea. The first issue was published in November 2013. For more information about ANPOR, see