After Little Ming read the book, his mother gave him 100 yuan to strengthen it. Reinforcement refers to the experience of a positive outcome after an action has taken place. This experience will encourage the individual to repeat the action and form a reward mechanism. In this example, if Xiaoming's mother gives him 100 yuan after he reads a book, it means that Xiaoming has obtained a positive result from reading the book, which means that he has obtained a monetary reward. This will stimulate Xiaoming to continue reading and obtain more rewards. Therefore, his mother's act of giving him 100 yuan was considered reinforcement.