BCABA Measurement and Data Collection 2 — Questions and Answers
Question 1: Which type of IOA is most appropriate for low-rate behaviors?
- Exact count IOA
- Scored-interval IOA
- Unscored-interval IOA
- Occurrence IOA (Correct answer)
Correct answer: Occurrence IOA
Occurrence IOA considers only intervals where at least one observer scored the behavior, making it more sensitive for infrequent behaviors.
Question 2: A rate measure is calculated by dividing the number of responses by:
- The session length (Correct answer)
- The number of opportunities
- The number of observers
- The number of intervals
Correct answer: The session length
Rate (or frequency per unit time) is computed as the count of responses divided by the total observation time.
Question 3: Whole-interval recording tends to _______ the true prevalence of a behavior.
- Overestimate
- Underestimate (Correct answer)
- Accurately estimate
- Not estimate
Correct answer: Underestimate
Because whole-interval recording requires the behavior to occur throughout the entire interval to be scored, it typically produces an underestimate of behavior prevalence.
Question 4: Which graphing format is most commonly used in applied behavior analysis to display data over time?
- Bar graph
- Pie chart
- Simple line graph (Correct answer)
- Scatter plot
Correct answer: Simple line graph
Simple line graphs (equal-interval line graphs) are the standard in ABA because they clearly display behavioral trends across time.
Question 5: A celeration chart (Standard Celeration Chart) measures behavior change on a:
- Linear frequency scale
- Logarithmic frequency scale (Correct answer)
- Cumulative count scale
- Percentage scale
Correct answer: Logarithmic frequency scale
The Standard Celeration Chart uses a semi-logarithmic scale, allowing equal visual representation of proportional change across orders of magnitude.
Question 6: Which term describes the number of correct responses divided by the total number of opportunities, expressed as a percentage?
- Rate
- Percent correct (Correct answer)
- Duration
- Inter-response time
Correct answer: Percent correct
Percent correct is a ratio measure calculated by dividing correct responses by total opportunities and multiplying by 100.
BCABA Measurement and Data Collection 2
Which type of IOA is most appropriate for low-rate behaviors?