In behavior management discussions with families, which data are most useful to demonstrate changes over time?

• A. IQ scores
• B. Frequency and duration data
• C. Standardized test scores
• D. Qualitative notes only

Answer: (B)

Tracking how often a behavior occurs and how long it lasts provides a clear, objective picture of change over time. Frequency data show whether the target behavior happens less often after an intervention, while duration data show if the behavior’s length decreases, and both are easy to plot and discuss with families. IQ scores and standardized tests measure cognitive skills and broad achievement, not day-to-day behavior changes, so they don’t capture these in-the-moment progress shifts. Qualitative notes describe what happens, but without numbers it’s harder to demonstrate a trend; when you pair qualitative insight with frequency and duration data, you give families a concrete, understandable story of progress.