Over time,human observers may become fatigued or change the standards on which observations are based.When this change in measurement occurs over time a researcher might suspect which type of effect?

Question

Quizplus · Accepted Answer

Instrument decay refers to changes in the measuring tool or instrument over time, which affects the accuracy of measurements. In this case, the observers' fatigue or change in standards could potentially lead to inaccurate measurements, indicating instrument decay. The other options are not relevant to this situation. History refers to external events that affect the outcome variable, regression toward the mean refers to extreme scores becoming less extreme upon retesting, and testing refers to the effect of a pretest on subsequent test scores.

Over Time,human Observers May Become Fatigued or Change the Standards