Scoring and Interpretation of Results Flashcards

A gifted program requires an NNAT3 score at the 95th percentile or above. What approximate NAI score would meet this threshold?

Answer: 125

The 95th percentile corresponds to approximately NAI 125 given a mean of 100 and standard deviation of 15.

When interpreting NNAT3 results, why is it important to consider the confidence interval rather than only the obtained NAI score?

Answer: Because measurement error means the true score may differ from the obtained score

All standardized tests have measurement error, so the true ability score falls within a range around the obtained score.

Which NNAT3 score level classification corresponds to an NAI score between 115 and 129?

Answer: Above average

Scores from 115 to 129 are typically classified as 'Above Average' in NNAT3 interpretive guidelines.

On the NNAT3, what does it indicate when a student's NAI score is described as 'not interpretable'?

Answer: The student answered too few items to yield a reliable score

When a student completes too few items (often due to non-attempt or refusal), the resulting score lacks reliability and is flagged as not interpretable.

A school psychologist notes that a student's NNAT3 percentile rank is 72. How should this be communicated to parents?

Answer: The student scored higher than 72% of same-age students nationally

A percentile rank of 72 means the student outperformed 72% of same-age peers in the national normative sample.

Which of the following best explains why two students with the same raw score may receive different NAI scores?

Answer: They were assessed at different ages, resulting in different norm-group comparisons

NAI scores are age-normed, so the same raw score earns a higher NAI for an older student relative to younger peers if the older group typically scores higher.

What is the primary purpose of age-based norming on the NNAT3?

Answer: To ensure fair comparison of students to same-age peers rather than all test-takers

Age-based norms allow scores to reflect how a student performs relative to others at the same developmental stage, ensuring equitable comparisons.