This report contains an historical overview of the international adoption of Korean children; the results of an Adoption Institute survey conducted prior to historical Gathering conference of the first generation of Korean adoptees, and synopsis of the adoptee discussion groups. Author: Madelyn Freundlich, Joy Kim Lieberthal Published: June 2000 http://www.holtintl.org/pdfs/Survey2.pdf Summary: http://www.adoptioninstitute.org/old/research/press3.html
Published in 2009, this was the most ambitious research into self-identity of Korean adoptees at the time. The basic structure is Korean adoptees into white families vs white adoptees into white families, which provides a good comparison and also some limitations. Read it here.