One of the study’s limitations is that those adoptees born/adopted in the late 1970s to 1989 would have had much greater access or opportunity to specialized Korean culture camps. Korean culture camps did exist back then, and in fact Holt first started their camps in 1983. I, as a “2nd wave” adoptee would have been 15 years old that year. A local family camp for Korean adoptees in Minnesota, Kamp Kimchee, began in 1978. For me, I would have liked to have know what the age breakdown was for those who attended camps and those who did not, and if there were any correlations between ages/year adopted and some of the other variables such as how one identifies racially/ethnically. My hypothesis would be that it would make a difference.
Harlow's Monkey 
hRmmm… doing that kind of study (a very important one!) would mean that those kamps would need to provide scholars with access to their records and activities – not an easy task.