Because of their expertise in working with volunteers, social workers may b
e called on to provide consultation to organizations that are nor tradition
al social service agencies, Unpaid volunteer donors provide the vast majori
ty of this country's blood supply; however; many donors give only once, and
few think of themselves as regular; committed donors. The purpose of this
study was to determine if special letters of request or incentives would in
crease blood donations during a 14-month study period. One thousand first-t
ime donors were randomly assigned to one of three intervention groups or th
e control condition. On average, first-time donors gave 1.89 donations, and
there were no statistically significant differences among the groups. The
conclusion was drawn that the interventions were tao passive.