The Cerebrals Society :: Ability and Above Average IQ Tests

This page lists questionnaires and tests prepared by members of the Cerebrals Society and freely available for self-administration.

Cerebrals International Contest 2009

:	Xavier Jouve (2008-2009)

			Rankings
>			Table
			Provides name and scores of the top contestants.

			Take the questionnaire
>			*No longer available*
			Macromedia Flash CS4 (.swf)
>			*No longer available*

			Adobe Acrobat Reader (.pdf)

The contest has ended. Thanks to all whom participated!

A new one will be released very soon.

Participants who are ranked in this page are invited to take this test of reasoning.

Cerebrals Cognitive Ability Tests (CCAT) 10:4 - 75 years

:	Xavier Jouve, Maria Faverio, Michael Woodley, Karin Lindgren & James Watterson (2003)

			In Brief
>			Purpose
			Provides a measure of crystallized-educational abilities even for the gifted in ages 10-75 years
>			Age range
			Adolescent & Adult
>			Time
			Varies depending on individual needs

			Psychometric Properties
>			Reliability
			Adobe Acrobat Reader (.pdf)
>			Correlations with the SAT I (recentered)
			Adobe Acrobat Reader (.pdf)
>			Correlations with the RIAS VIX
			Adobe Acrobat Reader (.pdf)
>			Crystallized-Educational Index to RIAS VIX and WAIS FSIQ Observed Correspondence
			Adobe Acrobat Reader (.pdf)
>			Crystallized-Educational Index Norms: Ages 10:4 -14:8 Years, Ages 14:8-75 Years
			Adobe Acrobat Reader (.pdf)
			Crystallized-Educational Index Confidence Intervals
			Adobe Acrobat Reader (.pdf)
>			Verbal Ability Index Norms: Ages 10:4-14:8 Years, Ages 14:8-75 Years
			Adobe Acrobat Reader (.pdf)
			Verbal Ability Index Index Confidence Intervals
			Adobe Acrobat Reader (.pdf)

			Take the test
>			Computerized Version revised (Sept 09)
>
			Macromedia Flash CS4 (.swf)

The Cerebrals Cognitive Ability Tests (CCAT) are specifically intended for appraising individual's level of crystallized processing on a moderately general basis through verbally and mathematically oriented tasks.

The CCAT is a battery divided into three subtests: Verbal Analogies (VA), Mathematical Problems (MP) and General Knowledge (GK) of respectively 42, 38 and 56 items. Each part measures a distinct ability, and once taken as a whole, these tasks give a reasonably good estimate of general crystallized intelligence and scholastic ability.

As a psychometric tool, the CCAT shows both excellent reliability and criterion-related-validity. Reliability of the full CCAT as checked by Spearman-Brown corrected Split-Half coefficient proved to be very highly satisfactory (.97). This ensures an acceptable measurement error (2.77 for the full scale index) and a fair stability of measurement. Furthermore, the Verbal Ability scale resulting from the addition of VA and GK subtests demonstrated sufficient level of reliability for being interpreted as an individual measure (.96).

Correlations shown by the CCAT Indexes with other measures are within the expectations. Validity of both the full and the verbal scales was confirmed by very high correlations with the Reynolds Intellectual Assessment Scales (RIAS) Verbal Index (.89). Moreover, the CCAT was closely related to the Scholastic Aptitude Test I (.87), and both the Wechsler Adult Intelligence Scale III (WAIS-III) Full Scale IQ (.92) and Verbal IQ (.89). In other words, the CCAT is an appropriate measure of one's crystallized-educational processing likewise for predicting a wide range of cognitive functioning.

Norms have been established by comparing CCAT scales with RAIS VIX and WAIS-III FSIQ, VIQ. RAIS VIX changes over years were then used to adjust CCAT indexes and produce age-referenced norms. The CCAT is suitable for both adolescents and adults (up to 75 years old). The computerized version yields with a raw score for each subtest.

Any questions? Feel free to use the Public Discussion Board or to contact Xavier Jouve directly.

We are constantly collecting data in order to perform further psychometric analyses on criterion related validity. Consequently, we are looking for poeple who already took the reasoning tests of the SAT, the ACT and other tests such as the WAIS IQ scale. Thank you very much for your help!

Test of Inductive Reasoning (TRI52) 16 - 68+ years

:	Xavier Jouve (2003)

			In Brief
>			Purpose
			Provides a culturally reduced measure of inductive reasoning in ages 16-68+ years
>			Age range
			Adolescent & Adult
>			Time
			Varies depending on individual needs

			Psychometric Properties
>			Reliability
			Adobe Acrobat Reader (.pdf)
>			Raw Score Criterion-Related-Validity
			Adobe Acrobat Reader (.pdf)
>			Reasoning Index Correlations with the WAIS IQs
			Adobe Acrobat Reader (.pdf)
>			Reasoning Index Correlation with the SAT-I Math Scale
			Adobe Acrobat Reader (.pdf)
>			Standard Score to Percentile Rank Correspondence
			Adobe Acrobat Reader (.pdf)

			Take the test
>			Computerized Version revised
			Macromedia Flash CS3 (.swf)

The Test of Inductive Reasoning (TRI52) aims at assessing one's inductive reasoning through culturally fair nonverbal tasks.

The TRI52 is a computerized nonverbal intelligence test designed with 52 figurative items which don't require acquired knowledge.

With excellent Guttman reliability coefficient (.92), the TRI52 raw score has demonstrated high validity.

The TRI52 Reasoning Index (RIX) has shown very high correlations with both the Scholastic Aptitude Test I (SAT I) composite score (.75), and the SAT I Mathematical reasoning test scaled score (.84).

It also very highly correlates with the IQ on traditional intelligence tests such as the Wechsler Adult Intelligence Scale III (WAIS-III) Full Scale IQ (.77) or the Slosson Intelligence Test - Revised (SIT-R3) Total Standard Score.

Thanks to the nonverbal nature of its items, this test is suitable for testing persons without cultural bias. It yields with the RIX, an age-referenced standard score equated on the SAT-I M.

Any questions? Feel free to use the Public Discussion Board or to contact Xavier Jouve directly.