The elapsed time between two successive responses is called what?

• A. Interobserver Agreement
• B. IRT
• C. Limited Hold
• D. Magnitude

Answer: (B)

Interresponse time is the elapsed time between the end of one response and the start of the next. This measure tells you how a learner’s responding is paced—whether responses occur in quick bursts or with longer pauses. It’s helpful for understanding fluency and for adjusting reinforcement or prompts to shape rate of responding. The other terms refer to different ideas: Interobserver Agreement is about reliability between observers, a Limited Hold is a time window after a stimulus to respond, and Magnitude is the intensity or force of a response. Focusing on the time between responses captures how quickly the behavior is emitted across successive opportunities.