This presentation is about intelligence tests including Raven Progressive matrixes, Standford Binet Intelligence test, Cattle culture fair intelligence test, and Wechsler intelligence test.

2. DEFINITIONS
 Intelligence is the global capacity of the individual to think rationally, to act
purposefully and to deal effectively with the environment. (Wechsler-1944)
 Intelligence is the ability to master the information and skills needed to
succeed within a particular culture. (Lolurto-1991)

3. TYPES OF INTELLIGENCE
Intelligence can be divided into Two kinds
1. Crystallized Intelligence (refers to the knowledge you acquire through
experience and education)
2. Fluid Intelligence (ability to reason, analyze, and solve problems)

4. Based on number of individuals
Individual tests
One individual is tested at a time
Group tests
Group of individual tested at a time.

5. Based on the form of test
Verbal tests
Uses language or paper and pencil
Non-verbal test
These test involves such activities in which use if language is not necessary
(performance etc)

6.  The Stanford-Binet Intelligence scale
 The Wechsler intelligence scales
 Cattell’s culture fair intelligence test
 Raven’s progressive matrices

7. STANFORD-BINET INTELLIGENCE SCALE
History:-
 Stanford Binet Test (1965) intelligent this is a new version of Binet-Simen
test.
 In the 1905 two French Psychologist Binet and Simen discover this
intelligence test.
 After that it was modified American Psychologist Termon with Binet at
Stanford University for current use of intelligence assessment.
 In 1986 it is known as Stanford Binet intellignce test form.

8.  Age group :- 2 -23 years
 Total time:- 30 to 90 minutes
The Stanford-Binet measures five factors of cognitive ability:-
1. Fluid Reasoning
2. Knowledge
3. Quantitative Reasoning
4. Visual-Spatial Processing
5. Working Memory

10. Intelligence Quotient
 Meanwhile a German psychologist William Stern created the now well
known Intelligence Quotient (IQ). By comparing the age a child scored at
to their biological age, a ratio is created to show the rate of their mental
progress as IQ. Terman quickly grasped the idea for his Stanford revision
with the adjustment of multiplying the ratios by 100 to make them easier to
read.

11. Examples
Verbal Question

12. Examples
Non-verbal Question

13. WECHSLER ADULT INTELLIGENCE SCALE (WAIS)
The Wechsler Adult Intelligence Scale (WAIS) is an IQ test designed to
measure intelligence and cognitive ability in adults and older
adolescents. The original WAIS (Form I) was published in February 1955
by David Wechsler, as a revision of the Wechsler–Bellevue Intelligence
Scale, released in 1939. It is currently in its fourth edition (WAIS-IV)
released in 2008 by Pearson, and is the most widely used IQ test, for both
adults and older adolescents, in the world.

14.  Original : David Wechsler(1939)
Three scales:
1. WAIS : Adults, 16-74 years (1939)
2. WISC : Children 7-16 years (1955)
3. WPPSI : Preschool primary 4-61/2yrs : Dr. Arthur Malin.

16. Psychometric properties
 Reliability : Split half reliability : .90 to .98
 Validity : Correlation with Stanford Binet -.80, with RPM-.70.

17. Cattell’s culture fair intelligence test
 Raymond B. Cattell created the CFIT to avoid environmental and genetic
factors.
 Cattell argued that general intelligence(g) exist and that it consist of fluid and
crystalized intelligence.
 This nonverbal intelligence test is culture fair because it avoids cultural and
language biases and focuses on logical reasoning only. The test is based on the
highly scientifically validated progressive matrices test of Dr. John Raven

18.  Group as well as individual.
 Time depends on scale.
 3 scale.
 Scale 1 For 4-8 yrs Children & older retardates.
 Scale2 For 8-14 yrs children & average adults.
 Scale3 For genius people.

19. Psychometric properties
 I.Q. & Percentile norms are given.
 Reliabilities in .70’s. Validity correlations are in the range of . 56-.85.

20. Example

21. Raven’s progressive matrices
 Developed by Dr. John C. Raven in 1936.
 Was designed as a measure of spearman’s ‘g’ factor of general intelligence.
 It’s a multiple choice intelligence test of fluid reasoning.
 Subject has to identify the missing pattern.

22. VERSIONS OF RPM
1. Standard Progressive Matrices
2. Colored Progressive Matrices
3. Advanced Progressive Matrices

23. STANDARD PROGRESSIVE MATRICES
• Original form of the matrices
• Published in 1938
• Five sets (A to E) of 12 items each (60)
• Difficulty level increases in each
• Black ink on a white background

24. COLORED PROGRESSIVE MATRICES
• For children aged 5 through 11 years-of-age and mentally and physically
impaired individuals
• Contains sets A, AB, and B from the standard matrices
• Presented on a colored background

25. ADVANCED PROGRESSIVE MATRICES
• For adults and adolescents of above-average
intelligence.
• Contains 48 items
• One set of 12 (set I), and another of 36 (set II)
• Presented in black ink on a white background

26. Progressive matrices versions

27. Psychometric Properties
 Test-retest reliability : .70-.90
 Internal consistency validity : .80-.90
 Autism spectrum disorder patients perform higher as they are predisposed
towards visual reasoning.