MEASUREMENT THREATS Flashcards
Measurement Artifacts
Misleading data resulting from the way measurement was taken
More likely in discontinuous measurement and improper measurement periods.
Treatment Drift
Unintentional changing of applying the IV within the treatment condition over a period of time.
Observer Drift
Observer unintentionally changes the data collection when using same device, can occur due to insufficient definition
Measurement Bias
Data is consistently inaccurate
Can be avoided by using a naive observer
Reactivity
Effect on client’s bx when aware of being observed
Observer Reactivity
Impact on data taken when observer is aware others will evaluate data
Naive Observer
One who is not familiar with the purpose or current condition of the treatment