NNAT3 Score Interpretation 2

Question 1

A student's NNAT3 Naglieri Ability Index (NAI) is 115. Which percentile range does this most likely correspond to?

Accepted Answer

Approximately the 84th percentile

Answer

An NAI of 115 is one standard deviation above the mean (100), corresponding to roughly the 84th percentile.

Question 2

Which NNAT3 score is most appropriate to use when comparing a student to peers nationally?

Accepted Answer

Naglieri Ability Index (NAI)

Answer

The NAI is a normalized standard score (mean=100, SD=15) that allows direct national comparison across age groups.

Question 3

A score report shows a student's NNAT3 percentile rank as 63. How should a teacher interpret this?

Accepted Answer

The student scored higher than 63% of the national norm group

Answer

A percentile rank of 63 means the student outperformed 63% of students in the standardization sample.

Question 4

On the NNAT3, the stanine scale divides the normal distribution into how many bands?

Accepted Answer

9

Answer

Stanines divide scores into 9 bands, with stanine 5 representing average performance.

Question 5

A student receives an NNAT3 NAI of 85. Which classification best describes this performance?

Accepted Answer

Low average

Answer

An NAI of 85 falls one standard deviation below the mean, typically classified as low average.

(NNAT3) Naglieri Nonverbal Ability Test 3 Practice Test