The next Lancet will have an article by Susan Walker,Effects of early childhood psychosocial Stimulation and nutritional supplementation on cognition and education in growth-stunted Jamaican children: prospective cohort study.

Anytime you can improve a food program you've got my attention. I'm a big fan of when fields cross over too. Susan tested the effects of a food supplement, stimulation, combined, & no treatment on IQ. Check it out here.