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2

ABILITY/APTITUDE/ACHIEVEMENT

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INTELLIGENCE TESTS

ALFRED BINET/20TH CENTURY/PARIS.

QUANTIFICATION WAS A VERY IMPORTANT ASPECT OF BINET AND SIMON’S WORKS.

QUANTIFICATION BECOME ESTABLISHES DURING WORLD WAR ONE.

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RELIABILITY AND VALIDITY

ALL TESTS (OBJECTIVE/PROJECTIVE) MUST DEMONSTRATE RELIABILITY AND VALIDITY IN ORDER TO BE USEFUL.

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RELIABILITY

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VALIDITY

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IQ AND ITS MEANING

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IQ CHRONOLOGICAL AGE(CA) IS

DIFFERENTE OF MA. INTELLIGENCE GROWTH IS MUCH

MORE RAPID AT YOUNGER AGE LEVEL.

WHO IS SMARTER? A CHILD WITH MA=4, CA=5 OR

MA=14,CA=15

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IQIQ= MA / CA x 100 15Y/O CHILD HAS:IQ= 93 4 Y/O CHILD HAS: IQ= 80

NORMAL RANGE OF IQ= 90-110MENTAL RETARDATION:IQ<70

SUPERIOR : IQ>120

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STANFORD-BINET SCALE

HAS TWENTY AGE LEVEL. HAS SIX ITEM AT EACH LEVEL. EACH ITEM COVER ONE OR TWO

MONTH OF MENTAL AGE. LAST VERSION (1986) IS

RADICALLY DIFFERENT.

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WECHSLER SCALE

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WAIS

HAS 11 SUBTEST. FIRST SIX SUBTESTS ARE VERBAL

SCALES: 1/ INFORMATION/ 2/ COMPREHENTION/ 3/ ARITHMETIC/ 4/ SIMILARITIES/ 5/ DIGIT SPAN/ 6/ VOCABULARY/

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WAIS SUBTESTS 7 TO 11 ARE

PERFORMANCE SCALES: 7/ DIGIT SYMBOL/ 8/ PICTURE COMPLETION/ 9/ BLOCK DESIGN/ 10/ PICTURE ARRANGEMENT/ 11/ OBJECT ASSEMBLY/

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MENTAL RETARDATION

PERFOUND < 20-25 SEVER 20-40 MODERATE 40-55 MILD 55-70 BORDERLINE 70-79

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