This study examines interactions of heritable influences, prenatal substance use, and postnatal parental warmth and hostility on the development of conduct problems in middle childhood for boys and girls. Participants are 561 linked families, collected in 2 cohorts, including birth parents, adoptive parents, and adopted children. Heritable…

Examined the effects of prenatal drug exposure on adopted children's behavior, temperament, health, and school adjustment by comparing the experiences of 3 cohorts of children: (1) 320 drug-exposed children; (2) 456 children who were not drug exposed; and (3) 620 children whose drug exposure was unknown. Two years after placement no significant…

Studies by many scientists have shown that the fetal period is the most important one for the development of a baby. It has been shown that this is the time when the basis for many diseases of the adult is formed. Among risk factors, the work environment is of considerable importance, as its influence on the woman's organism stands at 25 to 40…