The second type of secondary reinforcement is a token economy. A token economy system is one in which a person earns tokens for desirable behaviors. Each token is a step towards acquisition of a primary reinforcer or more reinforcing secondary reinforcement. Money is the classic example of a token economy system. I've more on token economy systems in the section on visual supports .
Secondary reinforcement has a number of advantages.
First, conditioned reinforcers are typically more convenient to use than primary. In that vein, secondary reinforcement typically fits in much better in a natural environment. We all receive encouragement, praise, or tokens throughout our everyday lives. Secondary reinforcement lessens the need for proximity to a child. If one is constantly having to offer treats or toys while a child is working, one must remain at his elbow almost constantly.