Right. I think I can address that from a couple of different angles.
I previously mentioned that we have 72% of the children in our program passing national grade level exams. We have child advocates who have followed up with all of these children, ensured that they have birth certificates, and obtained the birth certificates in the situations where they don't have them. There are some national registry programs in Haiti. We needed that registration in order for the children to participate in the national level exams.
The study, that I mentioned, is a collaboration with UNICEF and ILO. For 10 months, they are going to be following 16,000 families. The last study, that I know of, that measured the prevalence of children in restavek, by community, was a Pan American Development Foundation study from 2009.
In terms of other forms of measuring impact, that's something that we are working on and not only with our programs. One of the attractive features of this serial radio drama program that we are doing in partnership with Population Media Center based in Vermont, in the U.S.... They have done a great job. Before they roll out programming in Latin America, or in Africa, they do a baseline study and measure attitudes toward issues. After they've run the programming, they check in with institutions that would be affected by this type of programming. They measure the shifts in attitude and the access to services that are then available on those topics.