Self-help groups have become important resources for families of persons wi
th mental illness. The present study was an attempt to understand the facto
rs perceived by group members as helpful using Yalom's factors in clarifyin
g the dynamics of groups. Members (N = 202) of the Alliance for the Mentall
y Ill of Pennsylvania (AMI of PA), an association of self-help groups for f
amilies of the mentally ill, were recruited and responded to a self-adminis
tered questionnaire. Hierarchical block multiple regression indicated that
those AMI members who felt information provision and gaining support and se
lf-understanding from the group process was helpful and were longer term pa
rticipants in their group were more likely to perceive benefit from belongi
ng to the group. The findings may provide the basis for evaluating and impr
oving self-help group effectiveness and contribute to understanding process
factors within a self-help group which members find beneficial. Implicatio
ns for how these groups can attract and maintain members are discussed.