It’s a truism in child development that the very young learn through relationships and back-and-forth interactions, including the interactions that occur when parents read to their children. A new study provides evidence of just how sustained an impact reading and playing with young children can have, shaping their social and emotional development in ways that go far beyond helping them learn language and early literacy skills. The parent-child-book moment even has the potential to help curb problem behaviors like aggression, hyperactivity and difficulty with attention, a new study has found...