The behavior of the infant with prenatal drug exposure (PDE) is different from a nonexposed infant, and it is a difference that changes the rules of interaction for the caregiver. Infants exposed to opiates such as heroin or methadone demonstrate very specific signs of neurobehavioral dysfunction as they go through classic withdrawal symptoms.…

The goals of the study were: (1) to determine the relationships among selected sociological, health, and behavioral variables and third-grade word analysis test scores, and (2) to test a causal model employing part analysis. Subjects were 314 Head Start students in 1968. Data on race, sex, perinatal complications, number of children in the family,…

For the individual, gender difference falls along the feminine-masculine continuum with strong neurodevelopmental influences at various points throughout the lifespan. Neurodevelopmental influences are conceptualized in a vector model of sex difference. Vector attributes, direction and magnitude, are influenced initially by differences in levels…