We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleSustained helping without obligation: Motivation, longevity of service, and perceived attitude change among AIDS volunteers.AuthorsOmoto, Allen M.; Snyder, MarkPublicationJournal of Personality and Social Psychology, 1995, Vol 68, Issue 4, p671ISSN0022-3514Publication typearticleDOI10.1037/0022-3514.68.4.671