[1] The Naglieri Nonverbal Ability Test - Individual Form was first published in 1998.
[1] It is also used for admission by several high IQ societies; for instance Intertel accepts scores at or above the 99th percentile.
[5] In New York City, the NNAT-2 makes up 50% of the gifted and talented exam, the other 50% is the Otis–Lennon School Ability Test (OLSAT).
[citation needed] The NNAT has been found by one study to show excessive score variability, with within-grade standard deviations reaching as high as 20 points.
Lohman et al. found that 3.4 times as many students scored in the 130+ range on the NNAT as expected.