Hi Anne, I don't know the origin of the myth, but the study you refer to might be the one done by Mike Woolridge ages ago - if anyone knows anything about this, it is Kathleen Auerbach. Kathy? You out there? Yes? No? However, I find it fascinating that only breastfed babies are relegated to time in any way shape or form. After all, when was the last time you decided you needed to eat for at least 20 minutes to get all the nutrients, or that you only needed to eat for 5 minutes because you could get most all you needed in that time? We let bo feeding babies eat until they finish - we let toddlers eat until they are done. Why do we time breastfeeding babies? Let's learn (and teach our moms) to watch the baby, not the clock. (Boy, is that an overused phrase or what??) Have a great weekend, all! Jan B.