Children and adolescents present with depression in much the same way as adults. However, children and adolescents may not describe their sadness or depression in the same way as adults, sometimes expressing sadness through boredom, withdrawnness, or even angry expressions. Children do not yet have the same verbal ability to describe and understand emotions as adults, so they tend to express depressed moods through actions. The common behaviors or approaches at different developmental stages are: preschool, defiant behavior, aggressive or withdrawn behavior, difficulty interacting with other children, sleep and eating problems; elementary school, reluctance to go to school, poor academic performance, physical illnesses such as headaches and stomachaches, poor relationships with partners and adults, daydreaming, and somatic aggression; adolescence, eating disorders (especially in girls), somatic aggression (especially in boys), suicidal thoughts, alcohol/drug use, antisocial behaviors such as stealing and lying, and some adult-like depressive symptoms (e.g., sadness, poor sense of self, and loss of interest in previously enjoyed activities).