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PowerPoint Presentations for Passer/Smith Psychology: Frontiers and Applications
by David K. Jones Westminster College and Diane Feibel, Ed. D. Raymond Walters College
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PowerPoint Presentations for:
Passer/Smith Psychology: Frontiers and Applications Chapter 8 Intelligent Thought and Behavior
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Mental Representations
Mental representations take variety of forms including: Images Ideas Concepts Principles
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Properties of Language
Language is symbolic Uses written signs, sounds, and gestures to refer to objects, events, ideas, and feelings Language has structure Rules that govern how symbols can be combined Language is generative Symbols can be combined in infinite ways
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Language Surface Structure Deep structure
The way symbols are combined within a given language Rules for = syntax Deep structure The underlying meaning of the combined symbols Rules for = semantics
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Language Phonemes Morphemes
The smallest units of sound that are recognized as separate e.g. th and sh Morphemes The smallest units of meaning in a language; consist of one syllable e.g. hat and sick
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Language: Evidence for Biological Foundations
Human children begin to master language without formal instruction All adult languages have a common deep structure Infants vocalize the entire range of phonemes regardless of culture There may be a sensitive period in which language is most easily learned
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Language: Evidence for Biological Foundations
Can animals exhibit true language?
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Language The linguistic relativity hypothesis (Whorf, 1956)
Language determines what we are capable of thinking Today, linguists believe that language shapes the ways we think but does not determine it
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Cognition: Major Modes of Thought
Propositional thought Expresses a proposition (a statement of facts) Imaginal thought Consists of images we “see,” “hear,” “feel” etc. in our minds Motoric thought Relates to mental representations of motor movements
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Cognition: Concepts Concepts are basic units of semantic memory
Many concepts are represented by prototypes, such as a dove for the concept “bird” (Rosch, 1978)
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Cognition Deductive Reasoning Inductive Reasoning
Reason from general principles to a conclusion Useful process in forming hypotheses Inductive Reasoning Start with specific facts and try to develop a general principle
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Cognition: Problem-Solving Stages
Understanding or framing the problem Generating potential solutions Testing the solutions Evaluating results
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Cognition: Mental Sets
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Cognition: Problem-Solving Schemata
Step-by-step scripts for selecting information and solving special problems The use of problem-solving schemata is an important aspect of expert knowledge
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Problem Solving Algorithms Heuristics
Formulas or procedures for generating correct solutions E.g. mathematical formulas Heuristics Mental shortcuts that may or may not provide correct solutions
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Problem-Solving Heuristics
Means-ends analysis Identify differences between present state and goal state Make changes to reduce the differences Subgoal analysis Take intermediate steps toward an ultimate solution
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Problem-Solving Heuristics
Representativeness Heuristic Used to infer how closely something or someone fits our prototype for a particular concept Availability Heuristic Leads us to base judgments on the availability of information in memory
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Problem-Solving Heuristics
Confirmation Bias The tendency to look for evidence that will confirm beliefs
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Types of Thinking Divergent thinking Convergent thinking
The generation of novel ideas Convergent thinking A narrowing of alternatives
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Intelligence A concept that refers to individual differences in abilities to: Acquire knowledge Think and reason effectively Deal adaptively with the environment
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Intelligence Binet’s Assumptions Stern’s Intelligence Quotient
Mental abilities develop with age The rate at which people gain mental competence is characteristic of the person and is constant over time Stern’s Intelligence Quotient IQ = MA x 100 CA
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Types of Tests Achievement Tests Aptitude Tests
Designed to discover how much someone knows Aptitude Tests Measure potential for future learning and performance
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Types of Reliability Test-retest reliability
Assessed by administering the measure to the same group of participants twice and correlating scores Internal consistency All of the items of the test should measure the same thing Interjudge reliability Consistency of measurement when different people score the same test
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Types of Validity Construct
Does a test measure what it is supposed to measure? Content Do the items on a test measure all the knowledge or skills that comprise the construct? Predictive How well does the test score predict criterion measures?
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Standardization Must create a well-controlled environment for administering the test Normative scores (norms) provide a basis for interpreting an individual score
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Intelligence (Cattell; 1971; Horn, 1985)
Crystallized intelligence Ability to apply previously learned knowledge to current problems Fluid intelligence Ability to deal with novel problem-solving situations without any previous knowledge
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Multiple Intelligence Theory
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Emotional Intelligence
is EI
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Sternberg’s (1998) Triarchic Theory of Intelligence
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Biology of Intelligence
Intelligence may involve neural efficiency There are moderate correlations between IQ and speed and efficiency of information processing in the brain PET scans show that brains of highly intelligent people work more efficiently
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Biological or Environmental Influences of Intelligence?
Ethnic differences - On average: Asian-Americans score above white norms Hispanic-Americans score at white norms African-Americans score IQ points below white norm
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Sex Differences in Cognitive Abilities
Males Better at spatial tasks Better at throwing, catching objects Better at mathematical reasoning Females Better on tests of perceptual speed Have better verbal fluency Better at mathematical calculation Better fine motor coordination
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