Observer drift
When observers collecting data have a shift/drift in how they interpret the operational definition of the target behavior that affects the validity of their data.
C. Measurement, Data Display, and Interpretation
Observer reactivity
When an observer’s data collection or performance is influenced by the awareness that they are being monitored and evaluated.
Occurrence data
A measurement of behavior that represents its repeatability and countability.
6th Edition TCO
Operational definition
An objective, clear, and complete description of target behavior.
Operational definition Read More
6th Edition TCO
Partial interval recording
A time-sampling data collection method used to estimate the overall occurrence of a behavior by measuring the number of intervals during which the behavior occurs at any time within an
Percentage
A derived measure of behavior that depicts the proportional quantity of the number of times the behavior occurred out of the total number of opportunities for that behavior to occur
6th Edition TCO
Planned activity check
A time-sampling data collection method used to estimate the overall occurrence of behaviors of a group of individuals by measuring the number of intervals during which the behavior occurs at
Product measures
A measurement of a target behavior taken by measuring the lasting environmental changes produced by that behavior, rather than counting actual occurrences of the behavior. (E.g., test scores, completed chores,
Quarterly intersect line of progress
A method of analyzing the trend of the data on a line graph that involves dividing the data into two equal parts and establishing intersections for mid-rate and mid-date points
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6th Edition TCO
Rate
A derived measure of behavior that involves calculating the number of occurrences of a given response within a given period of time (e.g., number of mands per hour). Answers the
6th Edition TCO
Reliability
Measurement is trustworthy when the degree to which repeating a measurement procedure under the same conditions produces the same result.
Scale break
Specific marks on, or breaks in, the x-axis (i.e., horizontal axis) indicating the time periods during which data were not collected.