Orri M, et al. - Researchers examined the influence of intensity of exposure to child-care services prior to age 5 years on disruptive behavior problems during adolescence. Further, they determined if the children from low socioeconomic families display the effect more pronouncedly. From the Québec Longitudinal Study of Child Development, they assessed N = 1,588 participants 14 times from 5 months to 17 years. Lower levels of physical aggression and opposition during adolescence were reported for children exposed to moderate-intensity child-care services (part-time child-care services before 1½ years and full time afterward) than for children exposed to low-intensity child-care services. Findings suggest the preventive effect of moderate-intensity child-care services from infancy to school entry on disruptive behavior during adolescence, especially for disadvantaged children.