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

Question

Quizplus · Accepted Answer

Instrumentation refers to changes in the measuring instrument or in the observers or scores themselves. Selection bias refers to biases in selecting subjects for the study, while statistical regression refers to the tendency for extreme scores on a variable to become less extreme on a subsequent measurement.

________ Refers to an Extraneous Variable Involving Changes in the Measuring