This report summarizes findings from the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development as effect sizes for exclusive maternal care and--for children in child care--type, quality, and quantity of care. Children (n = 1,261) were recruited at birth and assessed at 15, 24, 36, and 54 months.…

Although child or teenage drug use is an individual behavior, it is embedded in a sociocultural context that strongly determines its character and manifestations. Examines drug use and abuse from a multidimensional perspective that includes aspects of the stimulus, organism, response, and consequences. Discusses epidemiology, etiology, prevention,…

Investigates the relation between psychological characteristics and drug use in subjects studied longitudinally, from preschool through age 18. Psychological differences between frequent drug users, experimenters, and abstainers could be traced to the earliest years of childhood and related to the quality of parenting received. Discusses how…