Todd,Jamal,and Samuel are trained observers for a research project.Just after completing their training,their interrater reliability is very high.However,over time and without their awareness,their observations converge less and less closely.The term for this phenomenon is

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Observer drift is the phenomenon in which trained observers' observations converge less and less closely over time and without their awareness. This is a common challenge in research projects that rely on observers to collect data. Fading agreement, rating separation, and observer spread are not the commonly used terms to describe this phenomenon.

Todd,Jamal,and Samuel Are Trained Observers for a Research Project