TONI-4 Analysis

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Name, publisher, type of test, and publication: Developed by Linda Brown, Rita Sherbenou, and Susan Johnsen and published by pro.ed The Test of Nonverbal Intelligence-Fourth Edition (TONI-4) is an assessment that uses abstract reasoning and figural problem solving to estimate general intellectual ability. The Test of Nonverbal Intelligence, Fourth Edition (TONI-4) is a measure of general intelligence relying heavily on a nonverbal format and limited motor responses. The TONI-4 is designed to assess abstract/figural problem-solving skills of children and adults varying from ages 6 to 89 who have language, hearing, and motor difficulties. The TONI-4 has two equivalent versions, Form A and Form B, each of which consists of 60 items listed in …show more content…

Examiners can use the TONI for various purposes. These purposes include estimating aptitude and general intellectual function. Identifying individuals believed to have intellectual impairments. Verifying the validity of referrals for treatment, therapy, or special services. In other words, the assessment is used to measure aptitude and general intellectual function without the need for verbal instructions. In order to administer this test, the examiner will need a basic understanding of mental ability testing and measurement statistics. They should also have a knowledge of the general procedure governing test administration scoring and interpretation. This knowledge is acquired by enrolling in college courses developed to assessment. These courses are typically found in the department of school psychology, special education, speech pathology, educational psychology and counseling. Workshops sponsored by local and state education agencies, professional organization, or private consultants may also help. In Counseling 428 Measurement Issues in Counseling, the different levels and the qualifications of those levels were discussed. The TONI-4 would be classified as in the level B category which “Requires some technical knowledge of test construction and background of the area(s) being assessed. Purchasers must have completed a four-year …show more content…

Construct validity is the degree to which scores measure an intended construct. Construct validity is demonstrated by the correlation with other established intelligence and school achievement tests, and item performance. Developers computed correlation coefficients between scores on the TONI-4 and scores on two nonverbal intelligence tests, the Comprehensive Test of Nonverbal Intelligence–Second Edition (CTONI-2; Hammill, Pearson, & Wiederholt, 2009) and the TONI-3 (Brown, Sherbenou, & Johnsen, 1997). For the CTONI-2 study, there were 72 participants 6 to 17 years old. Form A scores were correlated with scores on the CTONI-2 Pictorial Scale, CTONI-2 Geometric Scale, and CTONI-2 Full Scale. The corresponding corrected coefficients between the TONI-4 and these scales were .74, .73, and .79, respectively. In the TONI-3 study, 56 participants were randomly sampled from the standardization sample. Participants’ item-level data were rescored to obtain TONI-3 scores. The corrected correlation coefficient between the TONI-4 and TONI-3 was .74. Developers also calculated average correlation coefficients between TONI-4 scores and scores on three school achievement tests ranging from .55 to .78. The resulting correlations confirm construct validity. These results show the TONI-4 scores are generally more correlated with other intelligence test scores than with achievement test scores. Item

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