________ refers to an extraneous variable attributable to the loss of test units while the experiment is in progress.
A)Mortality
B)Interactive testing effect
C)Maturation
D)Main testing effect

Question

Quizplus · Accepted Answer

Mortality refers to the loss of test units during an experiment, which can affect the validity of the results because the remaining sample may no longer be representative of the original population. This loss of test units can be due to various reasons, such as dropouts or illnesses, and can introduce extraneous variables that affect the outcome of the experiment.

________ Refers to an Extraneous Variable Attributable to the Loss