Validity
Measurement is trustworthy when the measurement that produces data is applicable and specific to the target behavior of interest and the relevant dimension of that behavior; in other words, you… Read more
Task List Reference: C-8
Evaluate the validity and reliability of measurement procedures.
Threats to Validity Exposed: When Misleading Data Plays Tricks on Your Perception
Test your knowledge of measurement procedures with PTB co-founder Dana Meller as she explains, in detail, one of the threats to validity with several corresponding examples. Dana also shares a clever memorization study tip that will help you on the Big exam.
Refer to BCBA® Task List (5th ed.) Section C-8: Evaluate the validity and reliability of measurement procedures.
Threats to Validity Exposed: When Misleading Data Plays Tricks on Your Perception Read More
Test your ABA Terminology ➠ Indicators of Trustworthy Measurement
Test your knowledge with PTB co-founder Dana Meller as she explains the specific indicator of trustworthy measurement that corresponds with repeated measurement yielding the same result. Included is a description of all three indicators of trustworthy measurement validity, accuracy, and reliability.
Refer to BCBA® Task List (5th ed.) Section C-8: Evaluate the validity and reliability of measurement procedures.
Test your ABA Terminology ➠ Indicators of Trustworthy Measurement Read More
Test your ABA Terminology ➠ Confounding Threats to Internal Validity
Test your knowledge of measurement confounds with PTB co-founder Dana Meller as she discusses one of the four types of threats to internal validity, with corresponding examples.
Refer to BCBA® Task List (5th ed.) Section C-8: Evaluate the validity and reliability of measurement procedures.
Test your ABA Terminology ➠ Confounding Threats to Internal Validity Read More
Reliability
Measurement is trustworthy when the degree to which repeating a measurement procedure under the same conditions produces the same result.
Questing for the Gold Standard of IOA Agreement
PTB co-founder Dana Meller discusses Interobserver Agreement (IOA) and its significance in behavior analysis. Discover the desired percentage of agreement for IOA and its role in increasing data credibility and evaluating intervention effectiveness.
Refer to BCBA® Task List (5th ed.) Section C-8: Evaluate the validity and reliability of measurement procedures.
Questing for the Gold Standard of IOA Agreement Read More
Observer reactivity
When an observer’s data collection or performance is influenced by the awareness that they are being monitored and evaluated.
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.
Measurement bias
When an observer’s measurement is influenced by an expectation or belief they hold rather than what actually occurred.
Measurement artifact
Data that represents an unwarranted and misleading picture of behavior because of how it was measured, typically a product of time-sampling, limiting measurement scales, or poorly scheduled measurement periods.
Measurement artifact Read More
IOA Mini Manual
Math can be daunting, but practice can help.
In response to growing calls for more IOA practice opportunities, download the free PTB Interobserver Agreement Mini Manual. Designed to promote retention and reduce anxiety, the PTB IOA Mini Manual features 30 practice questions that cover the 9 IOA formulas you need to know to prep for the exam.