Following Green & Gerber,this section is not rated by level of confidence. These statements are unrated impressions from a growing body of research.
All research items-Previous

Distribution and collection of registration forms

*** Personal appeals along with distribution and collection of registration forms are effective.  This is based on studies in classrooms (of high school seniors and college students) and in neighborhoods.  (Green & Gerber, 2023) (Loewenstein, J.)