The NNAT (Naglieri Nonverbal Ability Test) is a cognitive ability test that is a nonverbal measure of general ability. The test was designed by Jack A. Naglieri, PhD, and is published by Pearson Education. The NNAT tests are often used to identify gifted and talented children for entrance into school accelerated and gifted and talented programs. The NNAT tests are nonverbal tests (requiring minimal use of language and instructions) which make use of abstract shapes and designs, and are therefore a good culturally neutral assessment of general ability.
There are three editions of the test
- NNAT® (first edition)
- NNAT®-2 (second edition)
- NNAT®3 (third edition)
All versions (or editions) of the NNAT are similar in the type of questions they test for i.e. they all test for the following four question types:
- Pattern Completion
- Reasoning by Analogy
- Serial Reasoning
- Spatial Visualization
The NNAT® (first edition) was the earliest NNAT test to be introduced and it contains 38 questions.
The later NNAT®-2 (second edition) and the more recent NNAT®3 (third edition) tests both contain 48 questions and should both be completed in 30 minutes.
The NNAT®-2 and NNAT®3 are quite similar, and NNAT2 test prep material can be used to help prepare for NNAT3 tests.
Pearson’s NNAT3 Manual for Levels A-D states
Although NNAT3 consists of an entirely new set of items, the item types
are the same as on NNAT2, and each level of the NNAT3 and NNAT2 forms have
a similar representation of types. Therefore, NNAT3 and NNAT2 are expected
to measure the same construct and to correlate highly with each other.
The items referred to are the questions and the item types are the four question types.
There is a difference between NNAT2 and NNAT3 tests in terms of the colors used to create items (or questions).
Both tests use the four colors black, white, yellow and blue, but for the fifth color, NNAT2 uses another shade of blue whereas NNAT3 uses green.
Visuprep NNAT2 tests use another shade of blue rather than green for the fifth color. However, most questions do not make use of a fifth color (i.e. two shades of blue), so the difference, in terms of color, with NNAT3 tests is minimal.