Children begin to demonstrate a greater sense of self by approximately 18 months of age. Do note that there is a difference between sentience (ability to consciously perceive and feel emotions) and self-awareness (the ability to recognize oneself as a distinct individual separate from the environment and other individuals). read more
the various reactions to the mirror infants and young children manifest as a function of age. Mirrors have been criticized for lacking ecological validity (Loveland, 1986) and mirror self- recognition for not being a thorough index of self-awareness (Povinelli, 1995, 2001). read more