Generally, when tests measure constructs that are affected by developmental changes, the reliability may not be as good for very young ages.

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This is because young children's abilities are still developing and they may not fully understand or engage with the test material in the same way that older children or adults do. As a result, their performance may be more variable and less consistent over time, which can decrease the test's reliability.

Generally, When Tests Measure Constructs That Are Affected by Developmental