________ refers to an extraneous variable involving changes in the measuring instrument or in the observers or scores themselves.
A)Instrumentation
B)Statistical regression
C)Selection bias
D)None of the above

Question

Quizplus · Accepted Answer

Instrumentation refers to the possibility of changes in the measuring instrument or observers themselves that could affect the results of a study. This can lead to inconsistency in the results, making it an extraneous variable to be controlled. Statistical regression and selection bias are other types of extraneous variables or biases that can affect the results of a study.

________ Refers to an Extraneous Variable Involving Changes in the Measuring