Examlex
Use the following to answer questions :
-age-grade systems
Observer Bias
A type of research bias that occurs when an observer's expectations, beliefs, or preferences influence the outcomes of a study or experiment unintentionally.
Observer Drift
A phenomenon in research where there is a gradual shift in how observers interpret or code data over time, potentially affecting the reliability of the results.
Pygmalion Effect
The phenomenon in which higher expectations lead to an increase in performance.
Laboratory Observation
A research method in which subjects are observed in a controlled environment to gather data.
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