Donald D. Hammill, Ed.D., Nils A. Pearson, Ph.D., J. Lee Wiederholt, Ph.D.
The Comprehensive Test of Nonverbal Intelligence-Second Edition (CTONI-2™) is an unbiased measure of nonverbal reasoning abilities in individuals for whom most other mental ability tests are either inappropriate or biased. Results of the CTONI-2 are useful for estimating the intelligence of individuals who experience undue language or fine motor skill difficulties.
The CTONI-2 measures analogical reasoning, categorical classification, and sequential reasoning, using six subtests in two different contexts: pictures of familiar objects (e.g., toys, people, animals) and geometric designs (unfamiliar sketches and drawings).
Key Features:
6 to 90
Professional
60 Minutes
6 subtests with 25 items each
B
Handscored
SIT-R3
6 to 90
Professional
60 Minutes
6 subtests with 25 items each
B
Handscored
SIT-R3
The CTONI-2 includes an Analogies Book, a Categories Picture Book, and a Sequences Picture Book. Profile/Examiner Record Forms are used to record responses for the handscored format.
The CTONI-2 was normed on a large representative national sample of 2,827 individuals. The normative data was stratified by age. The reliability coefficients of its composite are mostly in the .90s with a few in the high .80s. It correlates with most well-known intelligence testing in the high .70s.
CTONI-2 Kit
Manual, Analogies Book, Categories Picture Book, Sequences Picture Book, 25 Profile/Examiner Record Forms all in a sturdy storage box
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CTONI-2 Exam Record Forms
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CTONI-2 Manual