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Transcript of CTONI-2
COMPREHENSIVE TEST OF NONVERBAL INTELLIGENCE
Appropriate for those who understand instructions, capable of pointing response, familiar w/printed pictures and forms
be administered to those w/serious visual problems
New verbal instructions in variety of non-English languages
Level B Qualification (Pearson)
"Tests don't diagnose, people do"
HOW DOES IT MEASURE UP?
Content- Description Validity:
abilities chosen to measure are consistent w/current knowledge in a particular area. (Table 6.3)
Criterion- Prediction Validity:
effectiveness of a test to predict performance in specified activities (Table 6.10 & 6.11)
Construct Identification Validity
: traits of test reflect the theoretical model in which it is based (Eclecticism?)
In Sum...CTONI-2 strongly relates to other tests of general intelligence, esp. nonverbal.
Measures the ability to recognize two geometric design to each other
Find the same relationship between two different geometric designs
Decreases potential language and motor ability effects on general intelligence scores
Lack of specified theoretical approach (Construct identification)
While Non-English language instructions are considerate, they are not always useful...
Untimed...processing speed not a limitation
Measures the ability to select from a set of different pictures the one that is most similar to two other related pictures
Ability to select from a set of different geometric design the one that is most similar to two other related geometric designs
Measures the ability to select from a set of pictures the one that completes a sequence of actions shown in three pictures
Measures the ability to select from a set of geometric designs the one that completes a sequence of action shown on three designs
Purpose: To provide professionals with a measure of general intelligence using a non-verbal format.
For Who: Language disordered
Deaf or hard of hearing
Verbal Testing might be inappropriate (biasing)
Administration Time: 60min.
Ages: 6- 89:11
Evaluating the intellectual status of persons who have a variety of disabilities, such as:
For individuals w/ motor impairments, including people who are "simply awkward"
Provide researchers w/a tool to study nature of intelligence, interaction btw/verbal & nonverbal abilities, and role of nonverbal formats.
Diagnose and plan programs
Standardization normed w/95% verbal 5% nonverbal
NONE received non-English instruction
Standard Scores (M=10, SD=3), composite scores (M=100, SD=15), percentiles, age equivalents
Measures the ability to recognize the relationship of two objects to each other and find the same relationship between two different objects
Authors: Donald Hammill, Nils Pearson, & Lee Wiederholt
Publication Date: 1996, 2009
Cost: $637/per complete kit
Proper use of ceilings. Three consecutive incorrect responses (Table 2.1)
Subtests have No Basals
Both verbal and nonverbal instructions (Pantomime)
Discontinue subtest if examinee does not respond correctly to at least one practice item.
Simple scoring & administration
Internal Consistency: Cronbach's coefficient alpha
Pictorial Scale .90
Geometric Scale .95
Full Scale .95
Test Re-test Stability: 3 age groups each .80 or higher
Interscorer Agreement: significant across all coefficient > .95
Standardization process completed 2007-2008
Sample of 2,827 participants
Based on data from U.S Census Bureau
Gender, geographic region, race, parental ed., SES
95% oral administration
5% nonverbal administration
0% non-English administraion