What aspect does celeration measure in behavioral analysis?

Celeration in behavioral analysis specifically refers to the measurement of the rate of behavior change over time. It quantifies how quickly a behavior is increasing or decreasing, providing valuable insights into the effectiveness of interventions. By calculating celeration, practitioners can track progress and make informed decisions based on how rapidly a behavior is changing. This metric is essential for understanding not just the frequency of a behavior but how this frequency evolves, helping behavior analysts to tailor strategies effectively.

The other options present concepts related to behavior but do not accurately define celeration. Transitioning from inappropriate to appropriate behavior involves a qualitative change rather than a measure of rate. Duration focuses on how long a behavior occurs, while the diversity of behaviors displayed pertains to a different aspect of behavioral analysis—variety rather than change over time. Thus, only the measurement of the rate of behavior change accurately reflects the concept of celeration.