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Unit 11: Testing and Individual Differences
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Unit 11 - Overview Introduction to Intelligence Assessing Intelligence
The Dynamics of Intelligence Studying Genetic and Environmental Influences on Intelligence Group Differences and the Question of Bias Click on the any of the above hyperlinks to go to that section in the presentation.
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Module 60: Introduction to Intelligence
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Introduction Intelligence Intelligence test
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Is Intelligence One General Ability or Several Specific Abilities?
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Is Intelligence One General Ability or Several Specific Abilities?
Spearman’s General intelligence (g) Factor analysis Comparison to athleticism Thurstone’s counter argument g
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Gardner’s Eight Intelligences
Is Intelligence One General Ability or Several Specific Abilities? Theories of Multiples Intelligences: Garner’s Eight Intelligences Savant syndrome Gardner’s Eight Intelligences Linguistic Logical-mathematical Musical Spatial Bodily-kinesthetic Intrapersonal Interpersonal Naturalist Grit
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Is Intelligence One General Ability or Several Specific Abilities
Is Intelligence One General Ability or Several Specific Abilities? Theories of Multiples Intelligences: Garner’s Eight Intelligences Grit
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Sternberg’s Three Intelligences
Is Intelligence One General Ability or Several Specific Abilities? Theories of Multiples Intelligences: Sternberg’s Three Intelligences Sternberg’s Three Intelligences Analytical (academic problem-solving intelligence Creating intelligence Practical intelligence
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Emotional Intelligence
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Emotional Intelligence
Perceive emotions Understand emotions Manage emotions Use emotions for adaptive or creative thinking
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Is Intelligence Neurologically Measurable?
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Is Intelligence Neurologically Measurable? Brain Size and Complexity
Brain size studies Brain complexity studies Neural plasticity Gray matter versus white matter
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Is Intelligence Neurologically Measurable? Brain Function
Perceptual speed Neurological speed
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Module 61: Assessing Intelligence
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Origins of Intelligence Testing
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Origins of Intelligence Testing
Francis Galton’s intelligence testing Reaction time Sensory acuity Muscular power Body proportions Hereditary Genius
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Alfred Binet Identifying French school children in need of assistance
Origins of Intelligence Testing Alfred Binet: Predicting School Achievement Alfred Binet Identifying French school children in need of assistance Mental age Chronological age
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Origins of Intelligence Testing Lewis Terman: The Innate IQ
Stanford-Binet Test Lewis Terman New age norms Adding superior end
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Origins of Intelligence Testing Lewis Terman: The Innate IQ
Intelligence quotient (IQ) IQ = (mental age/chronological age) X 100 IQ of 100 is considered average World War I testing
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Modern Tests of Mental Abilities
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Modern Tests of Mental Abilities
Achievement tests Aptitude tests
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Modern Tests of Mental Abilities
Achievement tests Aptitude tests
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Modern Tests of Mental Abilities
Wechsler Adult Intelligence Scale (WAIS) Wechsler Intelligence Scale for Children (WISC)
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Principles of Test Construction
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Principles of Test Construction Standardization
Normal curve (bell curve)
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Principles of Test Construction Standardization
Normal curve (bell curve)
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Principles of Test Construction Standardization
Normal curve (bell curve)
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Principles of Test Construction Standardization
Normal curve (bell curve)
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Principles of Test Construction Standardization
Normal curve (bell curve)
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Principles of Test Construction Standardization
Normal curve (bell curve)
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Principles of Test Construction Standardization
Normal curve (bell curve)
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Principles of Test Construction Standardization
Normal curve (bell curve)
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Principles of Test Construction Standardization
Flynn effect
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Principles of Test Construction Standardization
Flynn effect
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Principles of Test Construction Reliability
Scores correlate Test-retest reliability Split-half reliability
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Principles of Test Construction Validity
Content validity Criterion Predictive validity
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Module 62: The Dynamics of Intelligence
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Stability or Change?
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Stability or Change? Aging and Intelligence
Cross-Sectional Evidence Longitudinal Evidence Cohort
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Stability or Change? Aging and Intelligence
It all depends Crystallized intelligence Fluid intelligence
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Stability or Change? Stability Over the Life Span
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Extremes of Intelligence
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Extremes of Intelligence The Low Extreme
Intellectual disability Mental retardation Down syndrome 21st chromosome Mainstreamed
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Extremes of Intelligence The High Extreme
Terman’s study of gifted Self-fulfilling prophecy Appropriate developmental placement
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Module 63: Studying Genetic and Environmental Influences on Intelligence
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Twin and Adoption Studies
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Twin and Adoption Studies
Identical twin studies Polygenetic Heritability Adoptive children studies
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Heritability
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Heritability
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Heritability
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Heritability
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Heritability
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Heritability
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Environmental Influences
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Environmental Influences
Early environmental influences Tutored human enrichment Targeted training Schooling and intelligence Project Head Start
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Module 64: Group Differences on the Question of Bias
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Group Differences in Intelligence Test Scores
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Emotion-detecting ability Math and spatial aptitudes
Group Differences in Intelligence Test Scores Gender Similarities and Differences Spelling Verbal ability Nonverbal ability Sensation Emotion-detecting ability Math and spatial aptitudes
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Ethnic similarities Ethnic differences
Group Differences in Intelligence Test Scores Racial and Ethnic Similarities and Differences Ethnic similarities Ethnic differences
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The Question of Bias
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The Question of Bias Two meanings of bias Test-taker’s expectations
Popular sense Scientific sense Test-taker’s expectations Stereotype threat
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The End
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Definition Slides
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Intelligence = mental quality consisting of the ability to learn from experience, solve problems, and use knowledge to adapt to new situations.
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Intelligence Test = a method of assessing an individual's mental aptitudes and comparing them with those of others, using numerical scores.
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General Intelligence (g)
= a general intelligence factor that, according to Spearman and others, underlies specific mental abilities and is therefore measured by every task on an intelligence test.
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Factor Analysis = a statistical procedure that identifies clusters of related items (called factors) on a test; used to identify difference dimensions of performance that underlie a person’s total score.
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Savant Syndrome = a condition in which a person otherwise limited in mental ability has an exceptional specific skill, such as in computation or drawing.
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Grit = the in psychology, grit is passion and perseverance in the pursuit of long-term goals.
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Emotional Intelligence
= the ability to perceive, understand, manage, and use emotions.
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Mental Age = a measure of intelligence test performance devised by Binet; the chronological age that most typically corresponds to a given level of performance. Thus, a child who does as well as the average 8-year-old is said to have a mental age of 8.
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Stanford-Binet = the widely used American revision (by Terman at Stanford University) of Binet’s original intelligence test.
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Intelligence Quotient (IQ)
= defined originally as the ratio of mental age (ma) to chronological age (ca) multiplied by 100 (thus, IQ=ma/ca X 100). On contemporary intelligence tests, the average performance for a given age is assigned a score of 100, with scores assigned to relative performance above or below average.
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Achievement Tests = tests designed to assess what a person has learned.
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Aptitude Tests = tests designed to predict a person’s future performance; aptitude is the capacity to learn.
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Wechsler Adult Intelligence Scale (WAIS)
= the WAIS is the most widely used intelligence test; contains verbal and performance (nonverbal) subtests.
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Standardization = defining uniform testing procedures and meaningful scores by comparison with the performance of a pretested group.
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Normal Curve = a symmetrical, bell-shaped curve that describes the distribution of many physical and psychological attributes. Most scores fall near the average, and fewer and fewer scores lie near the extremes.
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Reliability = the extent to which a test yields consistent results, as assessed by the consistency of scores on two halves of the test, on alternate forms of the test or on retesting.
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Validity = the extent to which a test measures or predicts what it is suppose to.
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Content Validity = the extent to which a test samples the behavior that is of interest.
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Predictive Validity = the success with which a test predicts the behavior it is designed to predict; it is assessed by computing the correlation between test scores and the criterion behavior (also called criterion-related validity).
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Cohort = a group of people from a given time period.
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Crystallized Intelligence
= our accumulated knowledge and verbal skills; tends to increase with age.
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Fluid Intelligence = our ability to reason speedily and abstractly; tends to decrease during late adulthood.
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Intellectual Disability
= a condition of limited mental ability, indicated by an intelligence score of 70 or below and difficulty in adapting to the demands of life. Formerly referred to as mental retardation
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Down Syndrome = a condition of mild to severe intellectual disability and associated physical disorders caused by an extra copy of chromosome 21.
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Hereditability = the proportion of variation among individuals that we can attribute to genes. The hereditability of a trait may vary, depending on the range of populations and environments studied.
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Stereotype Threat = a self-confirming concern that one will be evaluated based on a negative stereotype.
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