Which phenomenon describes fatigue of judges or observers over the course of measurement?

Which phenomenon describes fatigue of judges or observers over the course of measurement?

• A. Maturation
• B. Measurement Decay
• C. Mortality
• D. Placebo

Answer: (B)

Fatigue affecting those who rate or observe during data collection reduces accuracy and consistency as the measurement session progresses. This decline in the quality of measurement over time is known as measurement decay. It captures how judges or observers can become tired, lose attention, or drift in scoring, leading to less reliable data. Maturation refers to natural changes in participants over time, not to the observers or measurement process. Mortality means participants dropping out of a study, which is about sample retention. Placebo is a neutral or inactive intervention used as a control to assess treatment effects. Remedies include shorter sessions, breaks, training and calibration for raters, and using multiple raters or automated measures to maintain reliability.

Fatigue affecting those who rate or observe during data collection reduces accuracy and consistency as the measurement session progresses. This decline in the quality of measurement over time is known as measurement decay. It captures how judges or observers can become tired, lose attention, or drift in scoring, leading to less reliable data.

Maturation refers to natural changes in participants over time, not to the observers or measurement process. Mortality means participants dropping out of a study, which is about sample retention. Placebo is a neutral or inactive intervention used as a control to assess treatment effects. Remedies include shorter sessions, breaks, training and calibration for raters, and using multiple raters or automated measures to maintain reliability.