reference group
adolescent peer relations provides:
sibling subsystem - benefits
peer group - definition
variable that influence children’s friendships
friendship framework level 0 - momentary playmates
birth order
friendship framework level 1 - one-way assistance
development of groups
psychologist: bruce tuckman
friendship framework level 2 - two way, fair weather cooperation
friendship framework level 3 - intimate, mutually shared relationships
friendship framework level 4 - mature friendships