The series launched with three working papers and will release future papers as they are ready on a regular basis. It will feature cutting-edge research from our health, human services, and survey and statistical experts on compelling issues across Mathematica's diverse topic areas. In addition to providing access to our most current work, the working papers will share some of the in-depth analyses behind our other publications. The papers are intended to encourage discussion before final peer review and possible publication. In keeping with Mathematica's high standards of quality, all working papers undergo a rigorous internal quality review.