What characterizes a mixed schedule of reinforcement?

A mixed schedule of reinforcement is characterized by the alternation between multiple basic schedules randomly. This means that a behavior might be reinforced under different schedules at different times without a predictable pattern. For instance, a learner might receive reinforcement after a variable interval on some occasions, while on others, they might be reinforced on a fixed ratio. This randomness can help maintain engagement by providing varied experiences, which can be beneficial in teaching contexts.

The other options do not accurately describe a mixed schedule. A mixed schedule does not consist solely of a single basic schedule, nor does it integrate schedules in a predictable sequence. Instead, it is defined by its irregularity. Additionally, focusing only on behavioral extinction does not pertain to the characteristics of a mixed reinforcement schedule, as the concept of extinction is centered on the removal of reinforcement to decrease a behavior rather than the structure of reinforcement itself.