rat & wais tests

8/21/2019 Rat & Wais Tests

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RAT test


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Remote Associates Test(RAT):

Mednick (1962) developed the RAT as a means of measuring creative thought withoutrequiring knowledge specific to any field. He constructed two college-level

versions of the test, each consisting of 30 items .Each item consists of three wordsthat can be associated with a solution word in a number of ways.

for example, the three words:

SAME/TENNIS/HEADare associated with the solution MATCH by means of synonymy (same=match)

Formation of a compound word (match head) and semantic association(tennis match)

Reaching a solution requires creative thought, because the first, most related,information retrieved in solution attempts is often not correct, and solvers must

think of more distantly related information in order to connect the three words.


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Remote associate problems have several advantages over classic insight problems

(1) They can be solved in a short time, single experimental session of 1 h or less.

(2) They are simpler than classic insight problems, thus allowing better control of possible

confounding variables.

(3) They have single-word, unambiguous solutions, making scoring of responses easier.

(4) They are physically compact, so that they can be presented in a small visual space or sh

time span. These features Allow for better control and measurement of timing variables(e.g., measuring the time between presentation of the problem and production of a solutiocontrolling timing of hint presentation or timing of solution presentation for solution judgm

tasks, etc.)


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These problems can be divided into two types:

1-homogeneous:for which the solution word is a prefix (or suffix)

to all three words of the problem triad2-heterogeneous:

for which the solution word is a prefix (suffix) to at least one of the words of thetriad and a suffix (prefix) to the other word(s) of the triad.

The participant tried to produce the solution word within a time limit. In the six

experiments there were three different time limits (2, 7, and 15 sec).Immediatelyfollowing the production of a solution, or the end of the time limit, the participantwas shown a lateralized target word for 180 msec and was either to read the word

aloud quickly or to judge whether the word was the solution to the problem.


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For the 85 homogenous problems and 59 heterogeneous problems, the lardifference in percentage of participants solving was for the 15-sec solutio

period with mean percentages solved of 29% and 33% for the homogeneou

heterogeneous problems, respectivelyMean percentages solved were 7.8% and 7.9% within 2 sec.

23.0% and 22.7% within7 sec.

50.5% and 50.4% within 30 sec.

Video
http://localhost/var/www/apps/conversion/tmp/scratch_1/Redesign%20My%20Brain%20With%20Todd%20Sampson-%20Remote%20Associates%20Test%20(ABC1).MP4http://localhost/var/www/apps/conversion/tmp/scratch_1/Redesign%20My%20Brain%20With%20Todd%20Sampson-%20Remote%20Associates%20Test%20(ABC1).MP4


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WAIS (Wechsler Adult Intelligence Scale) :

History:

The WAIS was initially created as a revision of the Wechsler-BellevueIntelligence Scale (WBIS), which was a battery of tests published by Wechsler

in 1939. The WBIS was composed of subtests that could be found in various

other intelligence tests.- The WAIS was first released in February 1955 by David Wechsler.

The Wechsler tests included non-verbal items (known asperformance scales)

as well as verbal items .

- WAIS-R, a revised form of the WAIS, was released in 1981 and consisted ofsix verbal and five performance subtests.

- The WAIS-III, a subsequent revision of the WAIS and the WAIS-R, was

released in 1997. It provided scores for Verbal IQ, Performance IQ, and Full

Scale IQ, along with four secondary indices (Verbal Comprehension,Working Memory, Perceptual Organization, and Processing Speed).


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Verbal IQ (VIQ):Included seven tests and provided two subindexes:The Verbal Comprehension Index (VCI) included the following tests:InformationSimilaritiesVocabulary

The Working Memory Index (WMI) included:ArithmeticDigit Span

Performance IQ (PIQ):Included six tests and it also provided two subindexes:

The Perceptual Organization Index (POI) included:

Block Design Matrix Reasoning Picture Completion

The Processing Speed Index (PSI) included: Digit Symbol-Coding Symbol Search


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- WAIS-IV, which was released in 2008, is composed of 10 core subtests and five

supplemental subtests, with the 10 core subtests comprising the Full Scale IQ.

With the new WAIS-IV, the verbal/performance subscales from previous versionswere removed and replaced by the index scores. The General Ability Index (GAI)

was included, which consists of the Similarities, Vocabulary and Informationsubtests from the Verbal Comprehension Index and the Block Design, Matrix

Reasoning and Visual Puzzles subtests from the Perceptual Reasoning Index. TheGAI is clinically useful because it can be used as a measure of cognitive abilities

that are less vulnerable to impairments of processing and working memory.


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There are four index scores representing major components of intelligence: Verbal Comprehension Index (VCI) Perceptual Reasoning Index (PRI) Working Memory Index (WMI)

Processing Speed Index (PSI)

Two broad scores are also generated, which can be used to summarize general intelleabilities: Full Scale IQ (FSIQ), based on the total combined performance of the VCI, PRI, WM General Ability Index (GAI), based only on the six subtests that the VCI and PRI com


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VerbalComprehension

Core Proposed abilities measured Examples

Similarities X Abstract verbal reasoningIn what way are an appalike?

Vocabulary X

The degree to which one has learned,

been able to comprehend and verballyexpress vocabulary

What is a guitar?

Information XDegree of general information

acquired from cultureWho is the president of

(Comprehension)

Ability to deal with abstract socialconventions, rules and expressions

Why do plants need wa


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PerceptualReasoning

Core Proposed abilities measured

Block Design X Spatial perception, visual abstract processing, and pro

Matrix Reasoning XNonverbal abstract problem solving, inductive reasonireasoning

Visual Puzzles X Spatial reasoning

Picture Completion Ability to quickly perceive visual details

Figure Weights Quantitative and analogical reasoning


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Block design


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Figure


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WorkingMemory Core Proposed abilities measured Examples

Digit span XAttention, concentration, mental

control

Repeat the numbers 1-2-3

sequence

Arithmetic X

Concentration while

manipulating mentalmathematical problems

How many 45-cent stampfor a dollar?

Letter-NumberSequencing

Attention, concentration, mentalcontrol

Repeat the sequence Q-1place the numbers in numand then the letters in al

order


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ProcessingSpeed

Core Proposed abilities measured

Symbol Search X Visual perception/analysis, scanning speed

Coding XVisual-motor coordination, motor and mental

speed, visual working memory

(Cancellation) Visual-perceptual speed


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coding


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References:http://en.wikipedia.org/wiki/Wechsler_Adult_Intelligence_Scale

http://sevencounties.org/poc/view_doc.php?type=doc&id=8219&cn=18 Normative data for 144 compound remote associate problems
http://en.wikipedia.org/wiki/Wechsler_Adult_Intelligence_Scalehttp://sevencounties.org/poc/view_doc.php?type=doc&id=8219&cn=18http://sevencounties.org/poc/view_doc.php?type=doc&id=8219&cn=18http://sevencounties.org/poc/view_doc.php?type=doc&id=8219&cn=18http://sevencounties.org/poc/view_doc.php?type=doc&id=8219&cn=18http://sevencounties.org/poc/view_doc.php?type=doc&id=8219&cn=18http://sevencounties.org/poc/view_doc.php?type=doc&id=8219&cn=18http://en.wikipedia.org/wiki/Wechsler_Adult_Intelligence_Scalehttp://en.wikipedia.org/wiki/Wechsler_Adult_Intelligence_Scale

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