INTRODUCTION

When a scientific reviewer looks critically at an article, a chapter, or a grant, that reviewer often wonders what is missing. The reviewer will tell their peer to add a missing piece or at least justify why it is not there. In those days, there wasn’t anyone doing this work and the neuroimaging revolution just started. To many, it seemed a fool’s errand and not scientific enough to stand up in the musty halls of academia. At Harvard, The University of Albany, and The Medical University of South Carolina, we started in with functional magnetic resonance imaging and transcranial magnetic stimulation and the data collection began with Fisher Price Stethoscopes for Ages 2+ running from the control room to the participants. Knowing the kids can walk, talk, add, and get object permanence before self-face recognition is clearly a sign that the self-face might be a major stimulus.