Term
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Definition
| Any unintended change in the way an observer uses a measurement system over the course of an investigation that results in measurement error; often entails a shift in the observers interpretation of the original definitions of the target behavior subsequent to being trained |
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Term
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Definition
Poorly designed measurement systems
Inadequate observer training
Observer Drift
Observer Reactivity |
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Term
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Definition
| Influence on the data reported by an observer that results from the observers awareness that others are evaluating the data reported |
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Term
| Interobserver Agreement (IOA) |
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Definition
| The degree to which 2 independent observers report the same observed values after measuring the same events. |
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Term
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Definition
Use the same measurement
Measure the same event
Be independent |
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