Between the ages of 1 and 3, children begin to assert their independence by walking away from their mother, picking which toy to play with, and making choices about what they like to wear, to eat, and so on; if children in this stage are encouraged and supported in their increased independence, they become more confident and secure in their own ability to survive in the world; if children are criticized, overly controlled, or not given the opportunity to assert themselves, they begin to feel inadequate in their ability to survive, and may then become overly dependent upon others while lacking self-esteem and feeling a sense of shame or doubt in their own abilities