What term describes the frequency of stimulus presentation used to modify behavior?

The term that describes the frequency of stimulus presentation used to modify behavior is "schedule of reinforcement." This concept indicates how often a particular behavior is reinforced, which can significantly impact the learning process and maintenance of that behavior. Reinforcement schedules can be categorized as fixed or variable, and they can be based on intervals of time or numbers of responses.

In the context of behavior modification, understanding the schedule of reinforcement is crucial for effectively encouraging desired behaviors or reducing undesired ones. For example, a fixed ratio schedule provides reinforcement after a specific number of responses, while a variable interval schedule provides reinforcement after varying amounts of time, both shaping behavior in distinct ways.

The other terms do not accurately capture the concept of frequency related to behavioral modification. "Behavioral schedule" is more general and does not specifically pertain to reinforcement frequency. "Stimulus intensity" refers to the strength of the stimulus rather than its presentation frequency. "Behavioral frequency" could refer to how often a behavior occurs rather than how frequently a stimulus is presented to modify that behavior. Thus, the correct answer reflects the specific methodology of frequency in the context of behavior modification through reinforcement.