observations

Early life exposure to famine and colorectal cancer risk: a role for epigenetic mechanisms

Background Exposure to energy restriction during childhood and adolescence is associated with a lower risk...

American parenting of language-learning children: Persisting differences in family-child interactions observed in natural home environments

40 families were selected to represent the range of typical American families in size, race,...

The longitudinal study of interactive systems

The study of interactive systems such as families, school classrooms, and health-care systems requires both...