AARP Andrus Foundation is acknowledged for supporting the development and production of this publication. We at the LRC are pleased to have the opportunity to bring our research to life. This publication was a team effort. Professors Mark Rea, Russ Leslie, and Peter Boyce are acknowledged for providing technical and/or editorial review; Javier Ten, Kit Cuttle, and Eunice Noell-Waggoner are acknowledged for providing technical review. Yi Zhang is acknowledged for developing the drawings for this publication. Some of the drawings are based on drawings developed by Mark Patrizio and Bruce Kaiser for The Lighting Pattern Book for Homes. James Gross is acknowledged for the graphic design, cover artwork, and for overseeing the final production. Keith Toomey, the LRC Communications Group, Dan Frering, Zengwei Fu, Patricia Rizzo, and Chris Forget, are acknowledged for their contribution to this publication.