John: Just as your guest was completing her introductory explanation of the parent's role in helping infants deal with stress before their own coping ability is developed, and presumably was about to explain how this varied among various socio-economic classes, and how it effected the baby's brain development, you jumped in with a question about brain imaging that took the conversation in another direction. This left the earlier question hanging in the air, and left this listener still wanting to know the answer. Were you actually listening to the guest, or were you just waiting for her to pause so you could ask your question?

What about the effect of pre-school or day care on the development of young brains? Can these things help to compensate for the negative factors in a povertous upbringing?