Why does regression to the mean frequently occur?
A) Experimenters take multiple measures of behavior.
B) Assignment of participants is often based on factors that are not under experimenter control.
C) Experimenters prefer to randomly assign participants to conditions.
D) Scale attenuation effects are unavoidable.

Question

Quizplus · Accepted Answer

Regression to the mean occurs because extreme values on a variable tend to be followed by more central values, often due to factors like measurement error or natural variability, which are not under the experimenter's control.

Why Does Regression to the Mean Frequently Occur