Good Enough Psychiatrist on Instagram: "I often hear anxious worries from parents of 2- to 3-year-olds who say their child seems “selfish” or unable to understand another person’s perspective. There’s actually a developmental reason for this. Before about age 4 or 5, children have not yet developed what psychologists call “the theory of mind” —the ability to recognize that other people have their own thoughts, feelings, and beliefs that may differ from their own. The Sally-Anne Test (shown above