CBC CBC Data Collection & Measurement 2 — Questions and Answers
Question 1: What is the primary advantage of using momentary time sampling over whole interval recording?
- It always overestimates behavior occurrence
- It is less affected by observer fatigue during long observation periods (Correct answer)
- It requires continuous observation throughout each interval
- It captures the exact frequency count of each behavior
Correct answer: It is less affected by observer fatigue during long observation periods
Momentary time sampling only requires observing the client at the end of each interval, making it more practical for lengthy sessions.
Question 2: Which of the following best defines 'celeration' in the context of Standard Celeration Chart data analysis?
- The absolute count of behaviors per session
- The rate of change in behavior frequency over time (Correct answer)
- The percentage of intervals with behavior occurrence
- The average duration of each behavioral episode
Correct answer: The rate of change in behavior frequency over time
Celeration describes how quickly behavior frequency is accelerating or decelerating across time on a Standard Celeration Chart.
Question 3: A behavior consultant notices high variability in baseline data. What is the recommended decision before implementing an intervention?
- Immediately begin the intervention to stabilize data
- Continue baseline until a stable trend is established (Correct answer)
- Switch to a multiple baseline design immediately
- Reduce the number of observation sessions
Correct answer: Continue baseline until a stable trend is established
A stable baseline is required to establish a valid comparison point; high variability makes it difficult to detect treatment effects.
Question 4: Inter-response time (IRT) is best used to measure which behavioral characteristic?
- The duration of a single response
- The time between consecutive responses (Correct answer)
- The latency to the first response after a cue
- The number of correct responses in a session
Correct answer: The time between consecutive responses
IRT captures the elapsed time between the end of one response and the start of the next, useful for spacing or fluency goals.
Question 5: Which type of IOA is most appropriate when a behavior has a very low rate of occurrence?
- Total count IOA
- Occurrence-only IOA (Correct answer)
- Non-occurrence-only IOA
- Interval-by-interval IOA
Correct answer: Occurrence-only IOA
Occurrence-only IOA focuses agreement calculations on intervals where at least one observer recorded the behavior, preventing inflated agreement due to shared non-occurrences.
Question 6: A consultant creates a graph where the y-axis displays behavior rate per minute. This is an example of which type of display?
- Bar graph
- Cumulative record
- Equal-interval line graph (Correct answer)
- Standard Celeration Chart
Correct answer: Equal-interval line graph
An equal-interval line graph plots behavior rate or frequency on a standard arithmetic y-axis across sessions or time.
CBC CBC Data Collection & Measurement 2
What is the primary advantage of using momentary time sampling over whole interval recording?