The teaching brain

"What is at work in the mind of a five-year-old explaining the game of tag to a new friend? What is going on in the head of a thirty-five-year-old parent showing a first-grader how to button a coat? And what exactly is happening in the brain of a sixty-five-year-old professor discussing statistics with a room full of graduate students? While research about the nature and science of learning abounds, shockingly few insights into how and why humans teach have emerged--until now. Countering the dated yet widely held presumption that teaching is simply the transfer of knowledge from one person to…