Reinforcement is any event that strengthens or increases the behavior it follows. There are two kinds of reinforcers. In both of these cases of reinforcement, the behavior increases.
POSITIVE REINFORCEMENT
APP FEATURE
In positive reinforcement situations, a response or behavior is strengthened by the addition of praise or a direct reward. In this application if the user will have the highest score among others in a specific game the user's name can be displayed in the leaderboard together with user's highest points.
NEGATIVE REINFORCEMENT
APP FEATURE
In this application I have included a Tips in a question if the user will have a hard time answering but, if the user will use the Tips it will deduct their earned points (2points everytime they will use it).