The Naglieri Nonverbal Ability Test (NNAT2) Parkway School District 2009-2010

1. The Naglieri Nonverbal Ability Test (NNAT2)Parkway School District2009-2010 Dr. Denise Pupillo Coordinator of Gifted Education and Grants and Funding Parkway School District

2. NNAT2Naglieri Nonverbal Ability Naglieri Nonverbal Ability Test (second edition)—NNAT2 uses progressive matrices to allow for a culturally neutral evaluation of students’ nonverbal reasoning and general problem-solving ability, regardless of the individual student’s primary language, education, culture or socioeconomic background

3. Why the NNAT2? • ‘The NNAT2 is a brief, culture-fair, nonverbal measure of ability • NNAT2 items assess ability without requiring the student to read, write, or speak • NNAT2 uses abstract figural designs, and does not rely on verbal skills or achievement

4. Uses of NNAT • Use NNAT-2 to evaluate: • General ability in the entire student population • Students of limited English skills from diverse cultural backgrounds • Gifted and talented students • Non or intermediate English speakers, and students learning the English language for the first time • Students with limited motor skills, hearing impairment, and minimal color-vision impairment • Students whose economic or social circumstances have limited their acquisition of knowledge and verbal skills

5. Special Advantages of NNAT • Culturally fair content • All nonverbal items • Universal content • No reading required • Items do not measure achievement • Little motor skills required • Excellent psychometric qualities • Administered in 30 minutes

6. NNAT and NNAT2 The NNAT and NNAT2 are both unidimensional nonverbal tests that use progressive matrices to measure reasoning and general problem-solving ability NNAT and NNAT2 both have seven levels (A to G) spanning the ages 5.0 to 17.11 and grades K through 12

7. Differences between the NNAT and the NNAT2 • It is re-normed. • It is redesigned to engage and better assess the general student population. • It is available for on-line administration. • There are 48 items rather than 38. • The NNAT2 renames the standard score as the Naglieri Ability Index (NAI), changing the metric to a standard deviation of 16 (albeit still with a normative mean score of 100).

8. NNAT2 Development • Examinees have 30 minutes to complete 38 items (NNAT) or 48 items (NNAT2) • All knowledge required to solve each item is presented in the item, so that factual knowledge, vocabulary, mathematics, and reading skills are not required. • Items were selected based on • item difficulty • correlation to total test • bias analyses • fit statistics • Each level overlaps with adjacent ones

9. Seven levels 48 items per level Each level was designed to have good ceiling / floor good reliability as many as four item clusters Level Grades A K B 1 C 2 D 3 & 4 E 5 & 6 F 7 - 9 G 10 - 12 Structure of NNAT2 is the Same as the NNAT

10. NNAT Items How were they developed?

11. NNAT Item Clusters • NNAT item types identified from past research (J. Carlson & C. Jensen, 1980; J. Naglieri & W. Insko, 1986) • The NNAT has the following item types: • Pattern Completion • Reasoning by Analogy • Serial Reasoning • Spatial Visualization • NOTE: These are Not different types of intelligence

12. Cluster Descriptions • Pattern Completion:requires perception of a pattern within a large rectangle in which a piece is missing, extending the pattern into the missing space. • Reasoning by Analogy:requires reasoning about the logical relationship between several geometric shapes (changing in one or more dimensions, such as shape and shading) across rows and down columns. • Serial Reasoning:requires recognition of a sequence of shapes (e.g., circle—square—triangle) and how the sequence changes across rows and down columns. • Spatial Visualization:requires recognition of how two or more designs would look if combined; may involve rotations or intersection shapes.

13. Summary of NNAT Scoring • Raw Scores are converted to scaled scores BY LEVEL • Scaled scores are converted to NAI Scores BY AGE (in 1/4 year intervals) • Percentiles and Stanines are provided for Scaled Scores and NAI Scores • Age Equivalents are given for Scaled Scores

14. Naglieri Ability Index (NAI) • NAI Scores are set at a mean of 100 and SD of 16 based on the child’s age • The lowest NAI Score is 50 (-3.3 z) • The Highest NAI Score is 150 (3.3 z)

15. Sample ? 1 2 3 4 5

16. 1 ? 1 2 3 4 5

17. 2 ? 1 2 3 4 5

18. 4 3 ? 1 2 3 4 5

19. 4 ? 5 1 2 3 4

20. 5 ? 5 1 2 3 4

21. 6 ? 5 1 2 3 4

22. 7 ? 5 1 2 3 4