Test of Nonverbal Intelligence

Used for screening Nonverbal intelligence test Measures intelligence, aptitude, abstract

reasoning, and problem solving. It’s adaptable to individual disabilities/ cultural

variances (people who can’t listen, speak, read, write, who are from different cultural backgrounds, or who have neurological impairments)

It can be used with groups or individuals in or out of schools

Sources of ErrorToni-3 Forms

Alternate Form Reliability

Test-Retest Reliability

Inter-Scorer Reliability

Averages

Form A 93 91 .99 .96Forms B 93 92 .99 .96

The Toni-3 clearly evidences a high degree of reliability. It was tested for various types of potential test error and found to be reliable in three major areas: Alternate form reliability, test-retest reliability, inter-scorer reliability. The magnitude of these coefficients strongly suggests that the Toni-3 possesses relatively little test error and that users can have confidence in the consistency and stability of its results.

National representative of more then 3000 people ages 6 to 89

Represented in a number of diversities Stratified by:

◦ age ◦ gender ◦ race ◦ ethnicity ◦ geography/location ◦ community size ◦ language spoken at home ◦ and SES

Criterion Tests CTONI Pictorial Nonverbal IQ Geometric Nonverbal IQ

Overall Nonverbal IQ WISC-II Verbal Scale IQ

Performance Scale IQ Full Scale IQ WAIS-R Verbal Scale IQ Performance Scale IQ Full Scale IQ

TONI -3Form A Form B

.74 .72

.64 .64

.76 .74

.59 .53

.56 .58

.63 .63

.57 .51

.75 .76

.73 .71

It meets high standards for norms, reliability, and validity

It language free allowing anyone who can see to take it

It is mostly abstract eliminating cultural differences

It is easy to administer and score It is appropriate for any age It has two forms to allow for retesting or

post testing

Only one subtest There is a new version (TONI-4) to be

released soon It is a supplemental IQ test, it should not be

used for broad spectrum IQ test Compared to some other tests the TONI-3

may overestimate an individuals performance

Since the TONI-3 provides a strong norm sample and high measures of validity and reliability we would recommend the use of this test. It provides an alternative form of assessment when subjects cognitive, language, or motor impairments make traditional tests inappropriate or ineffectual. However, it is mainly a supplemental test and should not be solely relied upon to test IQ.