There are live-in rehab centers for adults and children. Children and teens with emotional disorders, mental illnesses, and substance abuse problems are sent to children rehab centers. Some children rehab centers only focus on treatment while others provide additional services such as education and training. Both children and adult centers primarily use medication and behavioral interventions to treat patients. Behavioral interventions are particularly helpful in successfully treating children. Behavioral interventions focus on studying children's past experiences, the environment they grew up in, and their pre-existing knowledge. All of these factors shape how children learn and how they behave. Positive reinforcement and token economies are two types of behavioral treatment that are particularly useful in changing negative behavior into positive behavior. In token economies, children are given tokens when they behave appropriately and they lose tokens when they behave inappropriately. Both positive reinforcement and token economies build on children's past experience with how rewards and punishment works. Children with behavioral problems were either exposed to bad behavior on a regular basis in their home environment or rewarded for when misbehaving. The goal of behavioral treatment is to reverse this trend by teaching children how to behave in socially appropriate ways and influence them to permanently adopt pro social behavior by rewarding them.