Reinforcement refers to the process and method of strengthening, weakening or eliminating a behavior by changing the stimuli of the environment. Direct reinforcement refers to the process in which individuals are strengthened by directly showing behaviors that should be strengthened. Alternative reinforcement refers to the process in which an individual is strengthened by observing the behavior of others. Self-reinforcement refers to the process of strengthening oneself with the reward at one's disposal when an individual's behavior reaches the standard set by himself.
According to the above definition, which of the following options is alternative reinforcement?
To warn others by punishing or criticizing a person.