Some experiments require observers to take many measures of the dependent variable over time and across participants. If they become better observers of the dependent variable during the course of the study, it produces a confound referred to as
A) instability.
B) unreliability.
C) instrumentation.
D) insensitivity.

Question

Quizplus · Accepted Answer

This confound is referred to as instrumentation, which occurs when there is a change in the calibration of the measuring instrument (in this case, the observers) over the course of a study, leading to inconsistencies in data collection.

Some Experiments Require Observers to Take Many Measures of the Dependent