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Transcript of 1 Intelligence. 2 What is Intelligence? Intelligence - the ability to learn from experience, solve...
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1
Intelligence
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What is Intelligence?
Intelligence - the ability to learn from experience, solve problems, and use
our knowledge to adapt to new situations.
In research studies, intelligence is whatever the intelligence test
measures. This tends to be “school smarts.”
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Francis Galton (1822-1911) was influenced by Charles
Darwin believed mental capacity was
inherited (Nature v. Nurture) believed we could breed a
“superior” people
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16 American states (1907-1917) enforced sterilization laws – eliminating mentally retarded
1920’s Immigration Restriction Acts immigrants would lower
American intelligence . Many people believed you could
figure an intelligence level by the size of a person’s head.
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Howard Gardner
Gardner proposes eight types of intelligences
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Robert Sternberg
Sternberg (1985, 1999, 2003) agrees with Gardner, but suggests three intelligences rather than eight.
1. Analytical Intelligence: Intelligence that is assessed by intelligence tests.
2. Creative Intelligence: Intelligence that makes us adapt to novel situations, generating novel ideas.
3. Practical Intelligence: Intelligence that is required for everyday tasks (e.g. street smarts).
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Emotional Intelligence
Emotional intelligence is the ability to perceive, understand, and use
emotions (Salovey and colleagues, 2005). The test of emotional intelligence measures overall
emotional intelligence and its five characteristics.
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Characteristics of EQ
Self-awareness Management of feelings
(delay gratification) Motivation Empathy Social skills
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How EQ is different from IQ?
a person can change their EQ but unable to change
their IQ.
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Assessing Intelligence
Psychologists define intelligence testing as a method for assessing an
individual’s mental aptitudes and comparing them with others using
numerical scores.
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Alfred Binet chosen to test intelligence when law
required all kids to go to school 1904 – came up w/ idea of mental age
(MA) MA = the chronological age that
typically corresponds to a given level of performance
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William Stern created Intelligence Quotient
(IQ) IQ = MA/CA x 100
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Aptitude and Achievement Tests
Aptitude tests are intended to predict your ability to learn a new skill and achievement tests are intended to reflect what you have
already learned.
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David Weschler Intelligence Scale Created most widely used test
today WAIS-R (Weschler Adult
Intelligence Scale-Revised) Binet’s test (verbal) plus extra’s
(non-verbal)
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WAIS
WAIS measures overall intelligence and 11 other aspects related to intelligence that
are designed to assess clinical and educational problems.
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Meaning of IQ
IQ Category % of Population
130+
120-129
110-119
90-109
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior
120-129
110-119
90-109
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129
110-119
90-109
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior
110-119
90-109
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119
90-109
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average
90-109
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109 Average
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109 Average 49
80-89
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109 Average 49
80-89 Low Average
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109 Average 49
80-89 Low Average 16
70-79
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109 Average 49
80-89 Low Average 16
70-79 Borderline
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109 Average 49
80-89 Low Average 16
70-79 Borderline 6
69-below
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109 Average 49
80-89 Low Average 16
70-79 Borderline 6
69-below Mentally Retarded
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Meaning of IQ
IQ Category % of Population
130+ Very Superior 2
120-129 Superior 7
110-119 High Average 19
90-109 Average 49
80-89 Low Average 16
70-79 Borderline 6
69-below Mentally Retarded 2
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WAIS CLASSIFICATION, %ile in the general populationdescriptions, | standard deviationHigh-IQ societies, | | IQ SD-15 - WAIS, WISCv = "here and down" | | | SD=16 - Binet, CTMM, Otis-Lennon | | | |PROFOUND RETAD.---v .13e-8 | 00 -07 IQ SD-23.7 - Cattell(Verbal)SEVERE RETARD.-----v .29e-4 -5.00 25 20 | SAT VerbalMODERATE RETARD.---v .0031 -4.00 40 36 | | GRE VerbalMILD RETARD.-------v .13 -3.00 55 52 | | | Miller AnalogiesBORDERLINE RETARD.-v 2.3 -2.00 70 68 | | | | SAT (old) Verbal+MathDULL-NORMAL--------v 9.1 -1.33 80 79 | | | | | ACT Composite**AVERAGE------------v25.0 -0.68 90 89 | | | | | |general pop. ave.---50.0 0.00 100 100 100 340 | | | |high sch. grad ave.-60.0 +0.25 104 104 106 370 | | 790 19 70.0 0.53 108 108 112 410 | | 860 21BRIGHT-NORMAL------v75.0 0.68 110 111 116 430 | | 910 22 80.0 0.83 112 113 120 450 420 | 940college grad ave.---84.1 1.00 115 116 124 470 440 38 980 23 90.0 1.29 119 120 130 500 470 43 1040 24SUPERIOR-----------v9l.O 1.33 120 121 132 510 480 44 1060 25 93.0 1.47 121 122 135 530 500 47 1100 26Ph.D. & M.D. ave.---95.0 1.63 125 126 139 550 530 52 1150 27 97.0 1.87 128 130 145 580 580 60 1190 28VERY SUPERIOR------v97.8 2.00 130 132 147 590 600 65 1220
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Principles of Test Construction
For a psychological test to be acceptable it must fulfill the following three criteria:
1. Standardization
2. Reliability3. Validity
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Standardization
Standardizing a test involves administering the test to a
representative sample of future test takers in order to establish a basis for
meaningful comparison.
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Flynn Effect
In the past 60 years, intelligence scores have risen steadily by an average of 27
points. This phenomenon is known as the Flynn effect.
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Reliability
A test is reliable when it yields consistent results. To establish reliability researchers
establish different procedures:1. Split-half Reliability: Dividing the test into
two equal halves and assessing how consistent the scores are.
2. Reliability using different tests: Using different forms of the test to measure consistency between them.
3. Test-Retest Reliability: Using the same test on two occasions to measure consistency.
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Validity
Reliability of a test does not ensure validity. Validity of a test refers to what the test is
supposed to measure or predict.
1. Content Validity: Refers to the extent a test measures a particular behavior or trait.
2. Predictive Validity: Refers to the function of a test in predicting a particular behavior or trait.