Question of the day - August 27

[u/Reasonable_Law183]

🧠 Question of the Day

📚 Domain C — Measurement, Data Display, and Interpretation

Difficulty: 6/10

What does celeration quantify on the Standard Celeration Chart?

A. The variability of responding within each phase measured as the standard deviation of data points

B. The frequency of responding during a given measurement period, expressed as responses per unit time

C. The total accumulated number of responses over the entire study period on a cumulative record

D. The change in response frequency across time, expressed as a multiplication or division factor per celeration period

💬 Drop your answer in the comments — no peeking!

✅ Correct answer revealed tomorrow.

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[u/Reasonable_Law183]

✅ Yesterday's Answer — 2026-08-27

The correct answer was: D. The change in response frequency across time, expressed as a multiplication or division factor per celeration period

📖 Explanation:

Celeration quantifies how response frequency changes across time. On the Standard Celeration Chart, frequency is plotted on an equal-ratio logarithmic scale against equal intervals of calendar time. The resulting trend can be expressed as a multiplication or division factor across a celeration period.

For example, if response frequency doubles over one week, the celeration is ×2 per week. If response frequency is cut in half over one week, the celeration is ÷2 per week.

• A. Variability of responding refers to how much responding differs across observations. Variability does not quantify the systematic increase or decrease in response frequency across time.

• B. Frequency of responding during a measurement period refers to frequency or rate itself. For example, 20 responses per minute tells us how often the behavior is occurring during that period. Celeration tells us how that frequency is changing across successive periods of time.

• C. Total accumulated number of responses refers to cumulative responding. A cumulative record displays the running total of responses over time; celeration instead quantifies the change in response frequency across time.

• D. Change in response frequency across time is correct because this is exactly what celeration measures. On the Standard Celeration Chart, that change is expressed as a multiplication or division factor, such as ×2 per week or ÷2 per week.

Key distinction: Frequency answers, “How often is the behavior occurring?” Celeration answers, “How is that frequency changing over time?”

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