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Thinking and intelligence
9 Thinking and intelligence
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9 Elements of cognition Concept Proposition Schema Image
Mental category that groups objects, relations, activities, abstractions, or qualities having common properties Basic concepts have a moderate number of instances and are easier to acquire. A prototype is an especially representative example. Proposition A meaningful unit, built of concepts, expressing a single idea Schema An integrated mental network of knowledge, beliefs, and expectations concerning a particular topic. Image A mental representation that resembles what it represents
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9 Your turn βTo get a hamburger, go to a fast-food restaurant and wait in line behind the counter. When it is your turn, tell the person by the cash register that you want a hamburger. He/she will tell you how much it costs. Give him/her enough money. In a few minutes someone behind the counter will give you a hamburger.β This kind of mental representation is best described as a: 1. Concept 2. Proposition 3. Schema 4. Image
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9 Your turn βTo get a hamburger, go to a fast-food restaurant and wait in line behind the counter. When it is your turn, tell the person by the cash register that you want a hamburger. He/she will tell you how much it costs. Give him/her enough money. In a few minutes someone behind the counter will give you a hamburger.β This kind of mental representation is best described as a: 1. Concept 2. Proposition 3. Schema 4. Image
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How conscious is thought?
9 How conscious is thought? Subconscious processes Mental processes occurring outside of conscious awareness but accessible to consciousness when necessary Non-conscious processes Mental processes occurring outside of and not available to consciousness
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Types of coconscious processes
9 Types of coconscious processes Implicit learning When you have acquired knowledge about something without being aware how you did so, and without being able to state exactly what you have learned Mindlessness Mental inflexibility, inertia, and obliviousness in the present context
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9 Reasoning The drawing of conclusions or inferences from observations, facts, or assumptions
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9 Algorithms and logic Deductive reasoning Inductive reasoning
A tool of formal logic in which a conclusion necessarily follows from a set of premises. Inductive reasoning A tool of formal logic in which a conclusion probably follows from a set of premises.
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Heuristics and dialectical thinking
9 Heuristics and dialectical thinking Heuristic A rule of thumb that suggests a course of action or guides problem solving but does not guarantee an optimal solution Dialectical reasoning A process in which opposing facts or ideas are weighed and compared, with a view to determining the best solution or resolving differences
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9 Reflective judgment Skills Question assumptions
Evaluate and integrate evidence Relate evidence to theory or opinion Consider alternative interpretations Reach defensible conclusions Reassess conclusions in face of new evidence
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Stages of reflective judgment
9 Stages of reflective judgment
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Barriers to rational reasoning
9 Barriers to rational reasoning Exaggerating the improbable Avoiding loss Biases due to mental set The confirmation bias The hindsight bias The need for cognitive consistency Overcoming our cognitive biases
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Exaggerating the improbable
9 Exaggerating the improbable Availability heuristic The tendency to judge the probability of an event by how easy it is to think of examples.
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9 Avoiding loss People try to minimize risks and losses when making decisions.
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9 The fairness bias The Ultimatum Game: Your partner gets $10 and must decide how much to share with you. You can accept or reject the offer, but if you reject it, neither of you get any money. It is rational to accept any offer: you always end up with more money if you accept than if you reject the offer. In industrial societies, offers of 50% are typical. Offers below 20β30% are commonly rejected.
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9 The hindsight bias The tendency to overestimate oneβs ability to have predicted an event once the outcome is known. The βI knew it all alongβ phenomenon
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9 The confirmation bias The tendency to pay attention only to information that confirms oneβs own beliefs Test this rule: If a card has a vowel on one side, it has an even number on the other side. Which 2 cards to turn over? 1. Cards 6 and 7 2. Cards J and 6 3. Cards J and 7 4. Cards E and 6
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Biases due to mental set
9 Biases due to mental set Mental set Tendency to solve problems using procedures that worked before on similar problems Mental sets make learning and problem solving more efficient. Not helpful when problem calls for new approach
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9 The nine-dot problem Connect all 9 dots. Use only 4 lines.
Do not lift your pencil from the page after you begin drawing.
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Need for cognitive consistency
9 Need for cognitive consistency Cognitive dissonance A state of tension produced when a person holds two contradictory cognitions or when a personβs belief is inconsistent with his/her behavior
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You try especially hard to reduce dissonance
9 You try especially hard to reduce dissonance When you need to justify a choice or decision you freely made When you need to justify behavior that conflicts with your view of yourself When you need to justify the effort put into a decision or choice
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Justification of effort
9 Justification of effort The tendency of people to increase their liking for something they have worked hard for or suffered to attain A common form of dissonance reduction
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Defining intelligence
9 Defining intelligence Intelligence An inferred characteristic of an individual, usually defined as the ability to profit from experience, acquire knowledge, think abstractly, act purposefully, or adapt to changes in the environment g factor A general intellectual ability assumed by many theorists to underlie specific mental abilities and talents
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9 Psychometrics The measurement of mental abilities, traits, and processes
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The invention of IQ tests
9 The invention of IQ tests Binet believed we should measure a childβs mental age. Binet and Simon developed a test which measured memory, vocabulary, and perceptual discrimination. Mental age was divided by chronological age and multiplied by 100 to get an intelligence quotient. Now IQ scores are derived from norms provided for standardized intelligence tests.
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The psychometric approach
9 The psychometric approach IQ scores distributed normally Bell-shaped curve Very high and very low scores are rare. 68% of people have IQ scores between 85 and 115. 99.7% between 55 and 145
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Wechsler tests performance tasks
9 Wechsler tests performance tasks
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Can IQ tests be culture free?
9 Can IQ tests be culture free? Attempts to make IQ tests culture fair or culture free have backfired because different cultures have different problem-solving strategies. Culture affects a personβs. . . Attitude toward exams Comfort in settings required for testing Motivation Rapport with test provider Competitiveness Ease of independent problem solving
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9 Expectations and IQ Scores are affected by expectations for performance Expectations are shaped by stereotypes Stereotype threat Burden of doubt one feels about his/her performance due to negative stereotypes about his/her group Stereotype threat affects African-Americans, Latinos/Latinas, low-income people, women, and the elderly.
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9 Stereotype threat
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Sternbergβs triarchic theory
9 Sternbergβs triarchic theory Componential (analytic) Comparing, analyzing, and evaluating This type of process correlates best with IQ Experiential (creative) Inventing solution to new problems Transfer skills to new situations Contextual (practical) Applying the things you know to everyday contexts
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Domains of intelligence
9 Domains of intelligence Emotional intelligence Ability to identify your own and other peopleβs emotions accurately Ability to express your emotions clearly Ability to manage emotions in self and others Appears to be biologically based (Damasio, 1994)
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9 Comparison: The Psychometric and Cognitive Approaches to Intelligence
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Motivation and intelligence
9 Motivation and intelligence Comparing 100 most successful men with 100 least successful, researchers found that motivation, not IQ, made the difference. Motivation to work hard at intellectual tasks differs as a function of culture. American children are as knowledgeable as Asian children on general skills.
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Beliefs about intelligence
9 Beliefs about intelligence Asian parents, teachers, and students are more likely to believe that math ability comes from studying. Americans are more likely to view ability as innate. American parents had lower academic standards for kids. American children value education less.
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9 Animal intelligence Cognitive ethology Studies show that animals can
The study of cognitive processes in nonhuman animals Studies show that animals can Anticipate future events Use numbers to label quantities Coordinate activities with other animals
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9 Theory of mind A system of beliefs about
The way oneβs own mind and the minds of others work How individuals are affected by their beliefs and feelings
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9 Animals and language Language is a critical element in human cognition. Many species can be taught to communicate in ways that resemble language. Chimpanzees and bonobos converse using American Sign Language and symbol board systems. An African grey parrot has been taught to count, classify, and compare objects using English words. Whether these behaviors are language depends on definition of βlanguage.β
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Thinking about animal thinking
9 Thinking about animal thinking Anthropomorphism The tendency to falsely attribute human qualities to nonhuman beings Anthropodenial The tendency to think, mistakenly, that human beings have nothing in common with other animals.
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