HCIL Tech Report on Dual-Participant Usability Testing (forthcoming)
HCIL Tech Report on Non-Confidential Census Testing (pdf)
Norman, K., and Campbell, S. (2005). "Pet Enumeration: Usability testing of U.S. Census Bureau data collection methods avoiding protected personal data." University of Maryland Human-Computer Interaction Laboratory Technical Report Series HCIL-2005-14.