Chapter 7: Cognition and Language - PowerPoint Presentation

Chapter 7: Cognition and Language What Is Cognitive Psychology?Cognition includes the mental activities associated with thinking, knowing, remembering, and communicatingOur study of cognition will examine such things as: concept learning, problem-solving, decision making and languageStart with concept learning. Concepts: mental grouping of similar objects, events, or people.

Formal and Natural Concepts Formal concepts (also known as logical or artificial concepts) have a rigid set of rules or parameters for membershipe.g., a triangleMost of our concepts develop through our own experiences in the world and are known as natural concepts e.g., colors A prototype is a typical example that exhibits all of the features associated with a certain category, more likely to be used as comparison for other (novel) objects. Prototypes more likely to be generic and basic

Table 7.1 From Prototypes to Unusual Examples VehiclesFruitCarOrangeBusAppleTrainPeachBicycleGrapeAirplaneStrawberryBoatGrapefruit Wheelchair Watermelon Sled Date Skates TomatoElevatorOlive Note: more generic at top, more specific and we move down tableMore generic can serve as representatives or comparisons (prototypes)Car= something you get in and it transports youOrange = round, peel, seeds, edible GenericSpecific

Classification of Concepts LO 7.2 Describe the hierarchical model of concept classification.Hierarchies of concepts: classifying concepts that progress from broad to narrowThe categories that are the broadest, or include the most concepts, are superordinate concepts Basic concepts provide significantly more information than the superordinate concepts Subordinate concepts are the most specific type of concepts and include the narrowest categories

Figure 7.1 A Concept Hierarchy

Problem-Solving Strategies LO 7.3 Identify different types of problem-solving strategies.A problem space can be defined in terms of the initial state, the goal state , and the set of operations We use a variety of different methods for solving different kinds of problems. trial and error algorithms heuristics means-end analysis

©John Wiley & Sons, Inc. 2007 Huffman: Psychology in Action (8e) Heuristics vs. algorithmsHeuristics: general problem solving strategies that are often useful but not always effective (in football: control line of scrimmage, avoid turnovers, in chess: control center of board.)Algorithms: step by step procedures guaranteed to solve a specific problem (recipe to bake a cake, formula to solve for area of triangle). Very narrow in scope, but guaranteed to work

©John Wiley & Sons, Inc. 2007 Huffman: Psychology in Action (8e) Means –End AnalysisInitial state (with problem) – goal state (with solution)Problem space – distance that must be traversed to move from initial to goal stateOperators: legal moves that can be made to traverse problem space (no magic, nothing illegal or unethical). Lab example: tower of Hanoi problemReal world example: graduating from college(must pass classes, must attend classes, must get up in the morning, must set alarm (no cheating, no paying for a grade, etc.)

Challenges with Problem Solving LO 7.4 Describe different problem-solving difficulties.Fixation is the inability to see a problem from a fresh perspective because of our tendency to become stuck in our thinkingA mental set is a preexisting state of mind we use to solve problems because it’s helped us solve similar problems in the past Functional fixedness is a bias that limits your ability to think about objects in unconventional ways

Figure 8.4 Functional Fixedness: Dunker’s make a lamp problem

Figure 8.3 Mental Set Problems: Luchins water jar problem

How People Make Decisions LO 7.5 Identify different theories about how people make decisions.Rational choice theory states that we make decisions by determining how likely each outcome of that decision is as well as the positive or negative value of each outcomeProspect theory states that we have a tendency to avoid risk in situations where we stand to gain but to become more risk seeking when facing a potential loss The presence of dopamine in the brain helps us make decisions that lead to good outcomes and avoid bad outcomes (role of emotions)

Obstacles in Decision Making LO 7.6 Recognize obstacles that can hinder decision making.The framing of an issue can influence our decisionsIf there are too many alternatives, we develop decision aversion and avoid making any decision at all The availability heuristic is a mental shortcut that tells us that if we can bring examples of an event to mind easily, that event must be common The representativeness heuristic is used when trying to make decisions about the probability of an event by comparing it to our existing prototype of the event Confirmation bias : only look for evidence that supports our pre-dispositions or initial inclinations

Decision-Making biases: Representativeness and Availability Representativeness—“common category members”We ignore how common behaviors actually are in a population and commit the base rate fallacy.Is John the druggie a rock star or accountant? (base rate fallacy)Availability—“off the top of my head”We estimate the likelihood of an event based on how easily it comes to mind.Confirmation bias: only looking for supportive evidence

Confirmation Bias LO 7.7 Describe the role of confirmation bias in decision making. Confirmation bias is the belief that something is true leads to the tendency to look for evidence that proves our beliefs while failing to notice evidence that disproves those beliefsIt can lead people astray in three ways:Influencing how we seek information Influencing how we interpret information Influencing how we remember information

Figure 7.3 System 1 and System 2

Creative thinking LO 7.8 Distinguish between convergent and divergent thinking.Creativity is the ability to come up with new ideas that can lead to a particular outcome, can involve both convergent and divergent thinking Convergent thinking occurs when we are confronted with well-defined, straightforward problems that have a right/wrong answer Divergent thinking includes thought processes used to generate many different possible solutions to a problem

Figure 7.5 Threshold Theory of Creativity

Sternberg’s Theory LO 7.9 Explain Sternberg’s theory of creative thinking.According to the investment theory of creativity, six ingredients must be present for creativity to emerge:Intellectual skills (seeing novel patterns) Knowledge (background in creative area, art, physics, etc.) Thinking styles (convergent, divergent thought) Personality ( openness* , moderately risk-taking) Motivation (persistence) Environment (encouraging of innovation)

Language: symbolic, rule-based system of communication shared by a community Features of langaugePhonemes are the smallest units of sound possible in a language Morphemes are the smallest units that have meaning Syntax refers to the rules about how words are to be arranged to form sentences Semantics refers to the meaning of words and sentences in a given language Grammar combines syntax and semantics to provide a system of rules that governs the way people compose and use language

The Features of Language (2 of 6) LO 8.3a Describe the four levels of analysis that make up language.PhonemesCategories of sounds that our vocal apparatus producesSmallest units of sound/gesture in languageProbably around 100 total; each language only uses a subset ranging from 15 to 6040 to 45 in English

The Features of Language (3 of 6) LO 8.3a Describe the four levels of analysis that make up language.MorphemesThe smallest units of meaning in a languageConvey information about semantics—meaning derived from words and sentencesCan be full words (“dog”) or suffixes/prefixes (s, ed) modifiers (“re-”), and other inflections that carry meaning

The Features of Language (4 of 6) LO 8.3a Describe the four levels of analysis that make up language.SyntaxThe set of rules of a language for constructing sentencesIncludes word order, morphological markers, and sentence structureReal-world language rarely follows these rules completely.

Language Development Based on the behavioral model, Skinner believed that children acquire their native language through the process of imitation and reinforcementChomsky proposed that humans are born with an innate capacity for acquiring language and the ability to learn the rules of grammar The critical period hypothesis (CPH) suggests that there is a limited window of opportunity for children to effectively learn language, which is within the first few years of life

Language Development LO 7.12 Identify milestones in language development.Children typically develop receptive language skills (the ability to understand language) much sooner than they develop expressive language skills (the ability to communicate with others using language) Fast mapping is the ability to acquire and retain new words or concepts with minimal exposure The process of slow mapping occurs when a child acquires a word through a more gradual process that requires repeated exposures

Table 7.2 Language Development Milestones , Birth to 2 yearsAgeReceptive Language SkillExpressive Language SkillBirth to 3 monthsRecognizes caregiver’s voice and calms down if cryingWhen feeding, starts or stops sucking in response to sound Reacts to loud soundsCalms down or smiles when spoken toCoos and makes pleasure soundsHas a special way of crying for different needs Smiles when he or she sees caregiver 4 to 6 months Follows sounds with his or her eyes Responds to changes in tone of voice Notices toys that makes soundsPays attentions to musicBabbles in speech-like way and uses many different sounds , including sounds that begin with p, b and mLaughsBabbles when excited or unhappyMakes gurgling sounds when alone or playing with someone 7 months to 1 year Turns and looks in the direction of sound Listens when spoken to Understands words for common items such as “cup,” “shoe,” or “juice” Responds to requests (“come here”) Babbles using long and short groups of sounds (“tata, upup , bibi ”) Babbles to get and keep attention Communicates using gestures such as waving or holding up arms Initiates different speech sounds Has one or two words (“hi,” “dog,” Dada,” or “Mama”) by first birthday ( Holophrasic speech) 1 to 2 years Knows a few parts of the body and can point to them when asked Follows simple commands (“roll the ball”) and understand simple questions (“where’s your shoe?”) Points to pictures, when named, in books Acquires new words on a regular basis Uses some one- or two-word questions (“where kitty?” or “go bye-bye?”) Puts two words together (telegraphic speech) Uses many different consonant sounds at the beginning of words

Table 7.2 Language Development Milestones, 2-4 yearsAgeReceptive Language SkillExpressive Language Skill2 to 3 yearsIncrease in understanding of object namesWhen asked, points to a picture of something named (such as “where is the cow?” or “show me the airplane”)Has a word for almost everything (vocab explosion)Uses two- or three-word phrases to talk about or ask for thingsUses k, g, f, t, d, and n sounds Speaks in a way that is understood by family members and friends Names objects or asks for them or to direct attention to them 3 to 4 years Hears when you call from another room Hears the television or radio at the same sound level as other family members Answers simple “who?” “what?” “where?” and “why?” questionsTalks about activities at daycare, preschool or friends’ homes Uses sentences with four or more wordsSpeaks easily without having to repeat syllables or words

Table 7.2 Language Development Milestones, 4-5 yearsAgeReceptive Language SkillExpressive Language Skill4 to 5 yearsPays attention to a short story and answers simple questions about itHears and understand most of what is said at home and in schoolUses sentences that give many detailsTells stories that stay on topicCommunicates easily with other children and adultsSays most sounds correctly, except for a few (j, s, r, v, z, ch, sh , th ) Uses rhyming words Names some letters and numbersUses adult grammarDevelopmental milestones are universal: all typically-developing children regardless of language.

Language and Thought LO 7.13 Explain the relationship between language and thought.The linguistic relativity hypothesis states that the way people think is strongly affected by their native languageThere is evidence that the language we speak influences our perceptions of the world

The Brain and Language LO 7.14 Identify the areas of the brain associated with language.Broca’s area is the area of the brain in the left frontal lobe associated with the production of speechWernicke’s area is the area of the brain in the left temporal lobe focused on language comprehensionWhen there is damage to the arcuate fasciculus, people develop conduction aphasia and they are unable to repeat words or sentences spoken by other peopleThe angular gyrus is important in tasks of reading and writing, and damage to this area has been associated with alexia (inability to read) and dyslexia (difficulty with reading)

Figure 7.7 Language Areas in the Brain