Why do significant numbers of people engage in the unpaid helping activitie
s known as volunteerism? Drawing on functional theorizing about the reasons
, purposes, and motivations underlying human behavior, we have identified s
ix personal and social functions potentially served by volunteering. In add
ition to developing an inventory to assess these : motivational functions,
our program of research has explored the role of motivation in the processe
s of volunteerism, especially decisions about becoming a volunteer in the f
irst place and decisions about continuing to volunteer.