Effects of Sequential Prepaid Incentives and Envelope Messaging in Mail Surveys

Dykema, J., Zoladz, K., Cyffka, K., Assad, N., Ganci Hammers, R., Elver, K., Malecki, K. C., & Stevenson, J. (2015). Effects of Sequential Prepaid Incentives and Envelope Messaging in Mail Surveys. Public Opinion Quarterly.