___________ refers to a threat to internal validity that occurs when low scorers improve or high scorers fall on a second administration of a test as a result of statistical reasons.
A) Mortality
B) Selection
C) Statistical regression
D) History

Question

Quizplus · Accepted Answer

Statistical regression refers to the tendency of extreme scores to move towards the mean on subsequent testing, which can threaten internal validity.

___________ Refers to a Threat to Internal Validity That Occurs