One of the first things most people do upon awakening in the morning is to look in the mirror. We instantly equate the identity of the reflection with ourselves. This, in essence, is self-recognition. Self-face recognition has been extensively studied by Gordon Gallup for more than 30 years by placing nonhuman primates in front of a mirror. Gallup observed that while most animals emit “other-directed” social responses in front of a mirror (for example, aggression), some primates engage in “self-directed” nonsocial behavior (such as grooming) that suggests an understanding that what they perceive is themselves and not another organism.