NORC conducts comprehensive assessments of the effectiveness of communication and outreach campaigns through formative studies, audience research, message testing, and other methods. NORC was selected to conduct a rigorous evaluation of the communications campaign for the 2010 Census, with applications for the 2020 Census. Working with the California Department of Public Health, NORC has collected data to inform the messaging and assess the ongoing effectiveness of a statewide obesity prevention campaign targeted to low‑income families.