T&T develops, analyses and evaluates psychological tests
The SON-tests are individual intelligence tests for general application which do not require the use of spoken or written language.
Therefore, the SON-tests are especially suited for children with problems in the area of language and verbal communication and for immigrant children.
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SON-R Overview The SON-R Nonverbal Intelligence Tests, an Overview
SON-R 2.5-7 The SON-R 2.5-7 Nonverbal Intelligence Test
SON-R 5.5-17 The SON-R 5.5-17 Nonverbal Intelligence Test
Computerprogram SON-test Computerprogram SON-test & Update: version 1.3

Summaries
The new section Summaries
In this section summaries are are presented of research reports by students of the University of Groningen. Most of these summaries are related to research on the development and validation of the SON-tests.

New
on the site		 Study on Adaptation of the Snijders-Oomen Non-verbal Intelligence Test Adaptation of the SON Intelligence Test (doc) Psych. Science China, 1997
SON-R 2.5-7 Manual and Research Report SON-R 2.5-7 Manual and Research Report (pdf) 1998, 2009
Usefulness SON-R 5.5-17 for Roma children Usefulness SON-R 5.5-17 for Roma children (doc) March, 2008
Heart rate measures and performnace on SON-R Heart rate measures and performnace on SON-R (pdf) January, 2008
Cognitive development Chinese Immigrant Children Cognitive development Chinese Immigrant Children (doc) July, 2007
Influence of language in which a test is presented Influence of language in which a test is presented (doc) January, 2000
Comparison SON-R 2.5-7 with WPPSI-R Comparison SON-R 2.5-7 with WPPSI-R (pdf) Psych. Reports, 1998
SON-R and mentally retarded children and adults SON-R and mentally retarded children and adults (doc) June, 1997
Interrelationships SON-R and reaction time test Interrelationships SON-R and reaction time test (doc) March, 1995
A comparative study of SON-R and LEM with deaf children Comparison SON-R and LEM with deaf children (doc) 1993
A comparative study between SON-R, WISC-R and Raven-SPM Comparison SON-R, WISC-R and Raven-SPM (doc) 1991

Discussion of the SON-R tests
SON-R SON-R 2.5-7 Manual and Research Report SON-R 2.5-7 Manual and Research Report (pdf) 1998, 2009
Usefulness SON-R 5.5-17 for Roma children Usefulness SON-R 5.5-17 for Roma children (doc) March, 2008
Heart rate measures and performance on SON-R Heart rate measures and performance on SON-R (pdf) January, 2008
Fair Assessment of Cultural Minorities RuG & UnB, Aug. 2005
Cultural bias in a nonverbal intelligence test Cultural bias in the SON-R (new version) Psicologia, Aug. 2004
The SON-test in Morocco The SON-test in Morocco, a photo impression Intern RuG, May 2004
The SON-test in Kenya The SON-test in Kenya, a photo impression Intern RuG, March 2004
The short form of the SON-R 5.5-17 The short form of the SON-R 5.5-17 RuG & UnB, Feb. 2004
Bibliography SON-tests Bibliography SON-tests Intern RuG, Jan. 2004
Cross-cultural research with the SON-tests Cross-cultural research with the SON-tests Intern UnB, 2001
Comparison SON-R 2.5-7 with WPPSI-R Comparison SON-R 2.5-7 with WPPSI-R (pdf) Psych. Reports, 1998
Study on Adaptation of the Snijders-Oomen Non-verbal Intelligence Test Adaptation of the SON Intelligence Test (doc) Psych. Science China, 1997
A nonverbal alternative to the Wechsler Scales A nonverbal alternative to the Wechsler Scales South Padre Conf. 1993
Construction & Validation of the SON-R 5.5-17 Construction & Validation of the SON-R 5.5-17 Eur. J. Psych. Ass. 1993
Is de SON-R 5.5-17 een test voor leerpotentiëel? Is the SON-R 5.5-17 a test for learning potential? LP assessment, 1993
Summaries Cognitive development Chinese Immigrant Children Cognitive development Chinese Immigrant Children (doc) July, 2007
Influence of language in which a test is presented Influence of language in which a test is presented (doc) January, 2000
SON-R and mentally retarded children and adults SON-R and mentally retarded children and adults (doc) June, 1997
Interrelationships SON-R and reaction time test Interrelationships SON-R and reaction time test (doc) June, 1997
A comparative study of SON-R and LEM with deaf children Comparison SON-R and LEM with deaf children (doc) 1993
A comparative study between SON-R, WISC-R and Raven-SPM Comparison SON-R, WISC-R and Raven-SPM (doc) 1991

Since 1 October 2003 the SON-tests are internationally published and produced by Hogrefe Verlag at Göttingen, Germany.
If you would like to learn about prices, or order the SON-tests, please contact one of the publishers/distributors listed below:


The Test Agency
U.K. and English speaking countries
Hogrefe Verlag Testzentrale
Germany
Testzentrale
Switzerland
Testcentrum
Czech & Slovak Republic
Hogrefe uitgevers
The Netherlands and Belgium
Hogrefe France
France

The test is sold to qualified professionals only.

Dr. P.J. Tellegen (University of Groningen, The Netherlands)
Dr. J.A. Laros (University of Brasilia, Brazil)

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