Social networks and daily activities of children and adolescents livin
g and/or working on the streets of a large Brazilian city were examine
d. Drawing on data collected through structured surveys, in-depth inte
rviews, focus group discussions, and field observations, we described
street youths' family situation, social resources, institutional exper
iences, survival activities, and problem behaviors and investigated di
fferences attributable to age, gender, and living situation (at home o
r on the street). Youngsters who lived at home and worked on the stree
t appeared to be experiencing orderly development despite their impove
rished circumstances. Youngsters who lived on the street showed hallma
rks of psychological and physical risk, including parental loss, dimin
ished social support, substance abuse, and early onset of sexual activ
ity. Possible implications of these contextual differences for develop
ment are discussed, and directions for future research suggested.