When the growth curve for a trait becomes flat, that is, no longer increases, which type of norm becomes meaningless?

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Quizplus · Accepted Answer

When the growth curve for a trait becomes flat, indicating no further increases, age equivalents become meaningless. This is because age equivalents are based on the average performance of individuals at various ages, and if there's no change in performance with age (a flat growth curve), then comparing an individual's performance to an age norm doesn't provide useful information.

When the Growth Curve for a Trait Becomes Flat, That