Objective. Social capital describes the benefits that are derived from
personal social relationships (within families and communities) and s
ocial affiliations. This investigation examined the extent to which so
cial capital is associated with positive developmental and behavioral
outcomes in high-risk preschool children. Design. A cross-sectional ca
se-control analysis of young children ''doing well'' and ''not doing w
ell'' at baseline in four coordinated longitudinal studies. Participan
ts. A total of 667 2- to 5-year-old children (mean age, 4.4 years) and
their maternal caregivers who are participating in the Longitudinal S
tudies of Chile: Abuse and Neglect Consortium. At recruitment, all chi
ldren were characterized by unfavorable social or economic circumstanc
es that contributed to the identification of the children as high risk
. Measures. Social capital was defined as benefits that accrue from so
cial relationships within communities and families. A social capital i
ndex was created by assigning one point to each of the following indic
ators: I) two parents or parent-figures in the home; 2) social support
of the maternal caregiver 3) no more than two children in the family;
4) neighborhood support; and 5) regular church attendance. Outcomes w
ere measured with the Child Behavior Checklist, a widely used measure
of behavioral/emotional problems, and with the Battelle Developmental
Inventory Screening Test; a standardized test that identifies developm
ental deficits. Children were classified as doing well if their scares
on these instruments indicated neither behavioral nor developmental p
roblems. Results. Only 13% of the children were classified as doing we
ll. The individual indicators that best discriminated between levels o
f child functioning were the most direct measures of social capital-ch
urch affiliation, perception of personal social support, and support w
ithin the neighborhood. The social capital index was strongly associat
ed with child well-being, more so than any single indicator. The prese
nce of any social capital indicator increased the odds of doing well b
y 29%; adding any two increased the odds of doing well by 66%. Conclus
ions. Our findings suggest that social capital may have an impact on c
hildren's well-being as early as the preschool years. In these years i
t seems to be the parents' social capital that confers benefits on the
ir off-spring, just as children benefit from their parents' financial
and human capital. Social capital may be most crucial far families who
have fewer financial and educational resources. Our findings suggest
that those interested in the healthy development of children, particul
arly children most at risk for poor developmental outcomes, must searc
h for new and creative ways of supporting interpersonal relationships
and strengthening the communities in which families carry out the dail
y activities of their lives.