At the ages of 3 to 5 years old, children begin to think about themselves and form a self-concept. They like what they like and dislike what they dislike. They also begin to have feelings such as happiness, sadness, and anger. Children at this age want to be independent and not rely on others for things such as eating meals or going to school. Children's brains are developing rapidly between the ages of 2 and 4 years old. The part of the brain that controls judgment comes online around age 4. This means that by age 4 children can tell good from bad, right from wrong. The ability to understand other people's feelings starts to emerge by age 5. Children at this age will learn by observing and listening to their parents and other adults. They will then use this information to understand how people feel about them. By age 7, children understand that others have different ideas about what they want. They can read other people's minds and can guess how others feel about them. By age 9, children develop an understanding of morality and know what actions are correct or incorrect. They can also distinguish between honesty and lying. By age 11, children become more aware of the consequences of their actions and try to choose behaviors that will get them what they want.