Portland State University. Department of Speech Communication
Robert W. Vogelsang
Date of Award
Master of Science (M.S.) in Speech Communication
1 online resource (86 p.)
Blood donors -- Attitudes, Reinforcement (Psychology)
This study measures two reinforcement strategies designed to increase repeat donations in first-time volunteer blood donors.
De Neffe, Larkey Sheldon, "The effects of a thank-you letter and/or phone call to first-time volunteer blood donors" (1987). Dissertations and Theses. Paper 3755.