Statisticians will often describe how extreme performances,both good and bad,tend to be followed by more average levels of performance.This ________ might be one explanation for why many psychotherapy patients improve regardless of the type of therapy received.

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Regression to the mean is the phenomenon where extreme performances tend to be followed by more average levels of performance. This could explain why psychotherapy patients improve regardless of the type of therapy received, as their extreme levels of distress may naturally regress towards the mean over time.

Statisticians Will Often Describe How Extreme Performances,both Good and Bad,tend