Bapu: Is it too large? It is a statistically significant effect. We're not picking up any effect on health or on non-continent outcomes. But I think the fact that it's concentration on cognition is an important finding. And hopefully, we'll see more studies.
In this special episode of Freakonomics, M.D., host Bapu Jena looks at a clever new study that could help answer one of parenting’s most contentious questions.