Final answer:
Extinction behaviors are brought about by schedules of reinforcement during times when reinforcement is unlikely to be delivered. This occurs when a reinforced behavior stops being reinforced, and the behavior diminishes or disappears.
Step-by-step explanation:
Behaviors that are brought about by schedules of reinforcement during times when reinforcement is unlikely to be delivered are known as extinction behaviors. Extinction occurs when a reinforced behavior stops being reinforced and the behavior diminishes or disappears. In the context of operant conditioning, extinction can occur when a behavior is trained through partial reinforcement schedules, such as fixed or variable interval or ratio schedules, where reinforcement is not delivered every time the behavior is performed.