Children who were seriously neglected in infancy can carry a physiological burden for years, even after moving to a loving environment. A study of their hormonal responses shows that their brains are less equipped to trust and form social bonds than other children.
“We don’t want to reach the conclusion that this difference is permanent,” says Seth Pollak, a developmental psychopathologist at the University of Wisconsin, Madison, who led the study. But he adds that the take-home message is that “children really need to be in families”.